121515021 is an odd 9-digits composite number following 121515020
and preceding 121515022 . In scientific notation, it is written as 1.21515021 × 10^8.
The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors.
There are 79033920 positive integers (up to 121515021) that are relatively prime to 121515021.
121515021 has 8 divisors, whose sum is 138310200
The reverse of 121515021 is 120515121
Previous prime number is 41
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 18
Digital Root 9
Name
one hundred twenty-one million five hundred fifteen thousand twenty-one
Scientific notation
1.21515021 × 10^8
Engineering notation
1.21515021 × 10^6
Prime Factorization
9 × 41 × 329309
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
121515021
Product of the distinct prime numbers
The prime factorization of 121515021 is 9 × 41 × 329309.
Since it has a total of 3 prime factors.
4 , 1 , 25 , 13 , 96 , 500 , 1783 , 3197 , 8882 , 4141 , 81363 , 800537 , 6407977 , 2983187 , 92948874 , 56823644 , 330853609 , 632661213 , 672243000 , 9016710297
n×2
243030042
n×3
364545063
n×4
486060084
n×5
607575105
n÷2
60757510.5
n÷3
40505007
n÷3
30378755.25
n÷5
24303004.2
n2
14765900328630441
n3
1.7942786885174E+24
n4
2.1803181251505E+32
n5
2.6494140276434E+40
2 √n
11023.385187863
3 √n
495.30949729527
4 √n
104.99231013681
5 √n
41.392913246031
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
-121515020
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 121515021 can be divided by 8 positive divisors.
The sum of these divisors (counting 121515021) is 1, the average is 0.125.
Base
System
Value
2
Binary
111001111100010110000001101
3
Ternary
22110122121021100
4
Quaternary
13033202300031
5
Quinary
222101440041
6
Senary
20020253313
8
Octal
717426015
10
Decimal
121515021
12
Duodecimal
34841239
16
Hexadecimal
73e2c0d
20
Vigesimal
1hj97b1
36
Base36
20chl9
md5
e664b122eebc828d0e885cf7a9614d26
sha1
6fb70f1ec5ec4c12eab44db268d5c90418a95467
sha256
5554981811603cc4a8e750e8f2f203c74f911c672f2591e313d6160593bb5b34
sha512
eddef325c0a8e4afa226ef2ae7f0ddc4644ef67effa1c158e0aaf8b655cb5b0e065366d171449db290dd32ef2507a7524019f1244094b011a96e6b3a0f2525be
ripemd-160
146f9dbe73259b37465299d4ed7427f5d7f08a5b
Diameter
243030042
Circumference
763501394.54882
Area
4.6388443996065E+16
Volume
7.5158569951188E+24
Surface area
1.8555377598426E+17
Circumference
763501394.54882
Perimeter
486060084
Area
14765900328630441
Diagonal
171848190.73025
Surface area
88595401971782646
Volume
1.7942786885174E+24
Space diagonal
210470190.2548
Perimeter
364545063
Area
6.3938223971715E+15
Altitude
105235095.1274
Surface area
6.3938223971715E+15
Volume
2.1145777133153E+23
Height
57282730.243417