1220121261 is an odd 10-digits composite number following 1220121260
and preceding 1220121262 . In scientific notation, it is written as 1.220121261 × 10^9.
The sum of its digits is 18. It has a total of 4 prime factors and 12 positive divisors.
There are 808232256 positive integers (up to 1220121261) that are relatively prime to 1220121261.
1220121261 has 12 divisors, whose sum is 1773624892
The reverse of 1220121261 is 1621210221
Previous prime number is 157
Is Prime? no Number parity odd Number length 10 Sum of Digits 18 Digital Root 9
Name
one billion two hundred twenty million one hundred twenty-one thousand two hundred sixty-one
Scientific notation
1.220121261 × 10^9
Engineering notation
1.220121261 × 10^9
Prime Factorization
3 × 3 × 157 × 863497
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
406707087 Product of the distinct prime numbers
The prime factorization of 1220121261 is 3 × 3 × 157 × 863497.
Since it has a total of 4 prime factors.
3 , 7 , 100 , 4 , 23 , 109 , 145 , 6013 , 74965 , 55074 , 948849 , 851743 , 7313495 , 2246929 , 8106476 , 4951029 , 905034209 , 289842418 , 6199665705 , 2666944179
n×2
2440242522
n×3
3660363783
n×4
4880485044
n×5
6100606305
n÷2
610060630.5
n÷3
406707087
n÷3
305030315.25
n÷5
244024252.2
n2
1488695891544230121
n3
1.8163895084365E+27
n4
2.2162154575007E+36
n5
2.7040515986534E+45
2 √n34930.23419618
3 √n1068.5651308841
4 √n186.89631937569
5 √n65.656934073251
1 , 3 , 9 , 157 , 471 , 1413 , 863497 , 2590491 , 7771473 , 135569029 , 406707087 , 1220121261
12 divisors
τ Total Divisors
12 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1220121260 Sum of the proper positive divisors of n
A Arithmetic Mean
0.083333333333333 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
1 Returns the nth root of the product of n divisors
H Harmonic Mean
12 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1220121261 can be divided by 12 positive divisors.
The sum of these divisors (counting 1220121261) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001000101110011001001010101101
3
Ternary
10011000212120201100
4
Quaternary
1020232121022231
5
Quinary
4444322340021
6
Senary
321023233313
8
Octal
11056311255
10
Decimal
1220121261
12
Duodecimal
2a0748839
16
Hexadecimal
48b992ad
20
Vigesimal
j15f331
36
Base36
k6ffl9
md5
047de0750cd90f48f852e132ebd74d7f
sha1
7a289928db2c501418240672aaa30352a67afe65
sha256
8e0519fe75b58a86a929c2347fe3872c2dc4e7e31afe9e99f7065939c706f642
sha512
dcd18a4ff2f039c95c516f582ee048777bddaf525e99785c7545ebddc56aa073a1d251a246e47a853a186a3ae5139b119117feebd30f101c77cb7eeb64d0c5b8
ripemd-160
0ba4bd9ed72a83ba95b70ba3491b6a060befbcea
Diameter
2440242522
Circumference
7666247980.0926
Area
4.6768760763047E+18
Volume
7.6084745810154E+27
Surface area
1.8707504305219E+19
Circumference
7666247980.0926
Perimeter
4880485044
Area
1488695891544230121
Diagonal
1725512035.046
Surface area
8932175349265380726
Volume
1.8163895084365E+27
Space diagonal
2113312015.447
Perimeter
3660363783
Area
6.4462423029341E+17
Altitude
1056656007.7235
Surface area
6.4462423029341E+17
Volume
2.1406355644859E+26
Height
575170678.34865