21020121 is an odd 8-digits composite number following 21020120
and preceding 21020122 . In scientific notation, it is written as 2.1020121 × 10^7.
The sum of its digits is 9. It has a total of 3 prime factors and 8 positive divisors.
There are 14013396 positive integers (up to 21020121) that are relatively prime to 21020121.
21020121 has 8 divisors, whose sum is 31140960
The reverse of 21020121 is 12102012
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 9
Digital Root 9
Name
twenty-one million twenty thousand one hundred twenty-one
Scientific notation
2.1020121 × 10^7
Engineering notation
2.1020121 × 10^6
Prime Factorization
3 × 9 × 778523
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21020121
Product of the distinct prime numbers
The prime factorization of 21020121 is 3 × 9 × 778523.
Since it has a total of 3 prime factors.
1 , 5 , 17 , 77 , 90 , 80 , 4589 , 1773 , 77582 , 56321 , 739567 , 966254 , 123945 , 2473358 , 9479771 , 35649284 , 197844149 , 889860973 , 6567031744 , 6546968110
n×2
42040242
n×3
63060363
n×4
84080484
n×5
105100605
n÷2
10510060.5
n÷3
7006707
n÷3
5255030.25
n÷5
4204024.2
n2
441845486854641
n3
9.2876455969885E+21
n4
1.9522743425381E+29
n5
4.1037042905347E+36
2 √n
4584.7705504202
3 √n
275.980504294
4 √n
67.710933758295
5 √n
29.142515916237
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21020120
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21020121 can be divided by 8 positive divisors.
The sum of these divisors (counting 21020121) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001011110111011001
3
Ternary
1110112221012000
4
Quaternary
1100023313121
5
Quinary
20340120441
6
Senary
2030311213
8
Octal
120136731
10
Decimal
21020121
12
Duodecimal
7058509
16
Hexadecimal
140bdd9
20
Vigesimal
6b7a61
36
Base36
cij89
md5
e2f76203a8ab7a2b04f6425de81e326a
sha1
2c6ad8c339b72533e5859eb29ced4425692abb25
sha256
9d7acc2984aa00de2f2db8b1aafcfc4dc135e3e8fd484a43dc3084422a937440
sha512
53f9ffcc29de411d951e6b092ca5ffac74670269d15543b71e0adb17a0cd01428331a4bda8b35c662ea8a31228bfeeb04acc79310794e46290c15bec9d0a27fb
ripemd-160
7aedd85d9cb6464894b6a92c4b30814269d98dbe
Diameter
42040242
Circumference
132073315.42234
Area
1.3880985355243E+15
Volume
3.8903998902193E+22
Surface area
5.5523941420974E+15
Circumference
132073315.42234
Perimeter
84080484
Area
441845486854641
Diagonal
29726940.200924
Surface area
2651072921127846
Volume
9.2876455969885E+21
Space diagonal
36407917.553246
Perimeter
63060363
Area
1.9132470808181E+14
Altitude
18203958.776623
Surface area
1.9132470808181E+14
Volume
1.0945595304813E+21
Height
9908980.0669745