12101981 is an odd 8-digits composite number following 12101980
and preceding 12101982 . In scientific notation, it is written as 1.2101981 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 11956092 positive integers (up to 12101981) that are relatively prime to 12101981.
12101981 has 4 divisors, whose sum is 12247872
The reverse of 12101981 is 18910121
Previous prime number is 83
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twelve million one hundred one thousand nine hundred eighty-one
Scientific notation
1.2101981 × 10^7
Engineering notation
1.2101981 × 10^6
Prime Factorization
83 × 145807
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
12101981
Product of the distinct prime numbers
The prime factorization of 12101981 is 83 × 145807.
Since it has a total of 2 prime factors.
4 , 5 , 34 , 92 , 350 , 974 , 8667 , 3738 , 49057 , 82862 , 267619 , 947152 , 7545520 , 4288015 , 60247652 , 33423186 , 461977658 , 208188839 , 9140971381 , 8423477461
n×2
24203962
n×3
36305943
n×4
48407924
n×5
60509905
n÷2
6050990.5
n÷3
4033993.6666667
n÷3
3025495.25
n÷5
2420396.2
n2
146457944124361
n3
1.7724312570921E+21
n4
2.1449929397134E+28
n5
2.5958663801546E+35
2 √n
3478.7901632608
3 √n
229.58957049146
4 √n
58.981269596888
5 √n
26.095840745896
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-12101980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 12101981 can be divided by 4 positive divisors.
The sum of these divisors (counting 12101981) is 1, the average is 0.25.
Base
System
Value
2
Binary
101110001010100101011101
3
Ternary
211202211210112
4
Quaternary
232022211131
5
Quinary
11044230411
6
Senary
1111215405
8
Octal
56124535
10
Decimal
12101981
12
Duodecimal
4077565
16
Hexadecimal
b8a95d
20
Vigesimal
3fcej1
36
Base36
77dy5
md5
3a3a7ce77db978bc6c17340fafa0ea2d
sha1
ac51e479d3cda388246361f6fb7e112e542eb94b
sha256
87bbf81963e607d6b485433f588d1e1edfabfc284d48363a472c2bead7517cce
sha512
ce08f8081e6ccf472f968ad1109725e8e3e89f4fedf7e5974a214c2099a225c134e23e4c5f4ee92796d051990e8e05a321d993eb2094494c73d8f196e1c672c4
ripemd-160
a8f07eaa63327dfb12f18a6e59a7b13170212dbf
Diameter
24203962
Circumference
76038989.206967
Area
4.6011120132096E+14
Volume
7.4243426883645E+21
Surface area
1.8404448052838E+15
Circumference
76038989.206967
Perimeter
48407924
Area
146457944124361
Diagonal
17114785.661782
Surface area
878747664746166
Volume
1.7724312570921E+21
Space diagonal
20961245.964233
Perimeter
36305943
Area
63418150098869
Altitude
10480622.982117
Surface area
63418150098869
Volume
2.0888302684613E+20
Height
5704928.5539272