21121358125
21,121,358,125 is an odd composite number composed of four prime numbers multiplied together.
21121358125 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety divisors.
Prime factorization of 21121358125:
54 × 72 × 432 × 373
(5 × 5 × 5 × 5 × 7 × 7 × 43 × 43 × 373)See below for interesting mathematical facts about the number 21121358125 from the Numbermatics database.
Names of 21121358125
- Cardinal: 21121358125 can be written as Twenty-one billion, one hundred twenty-one million, three hundred fifty-eight thousand, one hundred twenty-five.
Scientific notation
- Scientific notation: 2.1121358125 × 1010
Factors of 21121358125
Divisors of 21121358125
- Number of divisors d(n): 90
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Complete list of divisors:
1 5 7 25 35 43 49 125 175 215 245 301 373 625 875 1075 1225 1505 1849 1865 2107 2611 4375 5375 6125 7525 9245 9325 10535 12943 13055 16039 18277 26875 30625 37625 46225 46625 52675 64715 65275 80195 90601 91385 112273 188125 231125 233125 263375 323575 326375 400975 453005 456925 561365 689677 785911 1155625 1316875 1617875 1631875 2004875 2265025 2284625 2806825 3448385 3929555 4827739 8089375 10024375 11325125 11423125 14034125 17241925 19647775 24138695 33794173 56625625 70170625 86209625 98238875 120693475 168970865 431048125 491194375 603467375 844854325 3017336875 4224271625 21121358125
- Sum of all divisors σ(n): 31517234694
- Sum of proper divisors (its aliquot sum) s(n): 10395876569
- 21121358125 is a deficient number, because the sum of its proper divisors (10395876569) is less than itself. Its deficiency is 10725481556
Bases of 21121358125
- Binary: 100111010101110111001011001001011012
- Hexadecimal: 0x4EAEE592D
- Base-36: 9PB408D
Squares and roots of 21121358125
- 21121358125 squared (211213581252) is 446111769044503515625
- 21121358125 cubed (211213581253) is 9422486437766247816337158203125
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The
square root of 21121358125 is 145331.8895666055 -
The
cube root of 21121358125 is 2764.2285408515
Scales and comparisons
How big is 21121358125?- 21,121,358,125 seconds is equal to 671 years, 30 weeks, 6 days, 3 hours, 55 minutes, 25 seconds.
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To count from 1 to 21,121,358,125 would take you about one thousand, three hundred forty-three years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21121358125 cubic inches would be around 230.4 feet tall.
Recreational maths with 21121358125
- 21121358125 backwards is 52185312112
- The number of decimal digits it has is: 11
- The sum of 21121358125's digits is 31
- More coming soon!
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