21105972321
21,105,972,321 is an odd composite number composed of three prime numbers multiplied together.
What does the number 21105972321 look like?
This visualization shows the relationship between its 3 prime factors (large circles) and 48 divisors.
21105972321 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty-eight divisors.
Prime factorization of 21105972321:
3 × 73 × 295
(3 × 7 × 7 × 7 × 29 × 29 × 29 × 29 × 29)See below for interesting mathematical facts about the number 21105972321 from the Numbermatics database.
Names of 21105972321
- Cardinal: 21105972321 can be written as Twenty-one billion, one hundred five million, nine hundred seventy-two thousand, three hundred twenty-one.
Scientific notation
- Scientific notation: 2.1105972321 × 1010
Factors of 21105972321
Divisors of 21105972321
- Number of divisors d(n): 48
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Complete list of divisors:
1 3 7 21 29 49 87 147 203 343 609 841 1029 1421 2523 4263 5887 9947 17661 24389 29841 41209 73167 123627 170723 288463 512169 707281 865389 1195061 2121843 3585183 4950967 8365427 14852901 20511149 25096281 34656769 61533447 103970307 143578043 242597383 430734129 727792149 1005046301 3015138903 7035324107 21105972321
- Sum of all divisors σ(n): 33989904000
- Sum of proper divisors (its aliquot sum) s(n): 12883931679
- 21105972321 is a deficient number, because the sum of its proper divisors (12883931679) is less than itself. Its deficiency is 8222040642
Bases of 21105972321
- Binary: 100111010100000001110010100011000012
- Hexadecimal: 0x4EA039461
- Base-36: 9P1Y8GX
Squares and roots of 21105972321
- 21105972321 squared (211059723212) is 445462067614818127041
- 21105972321 cubed (211059723213) is 9401910069133781878776407632161
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The
square root of 21105972321 is 145278.9465855255 -
The
cube root of 21105972321 is 2763.5571791995
Scales and comparisons
How big is 21105972321?- 21,105,972,321 seconds is equal to 671 years, 5 weeks, 3 days, 2 hours, 5 minutes, 21 seconds.
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To count from 1 to 21,105,972,321 would take you about one thousand, three hundred forty-two 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 21105972321 cubic inches would be around 230.3 feet tall.
Recreational maths with 21105972321
- 21105972321 backwards is 12327950112
- The number of decimal digits it has is: 11
- The sum of 21105972321's digits is 33
- More coming soon!
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The information we have on file for 21105972321 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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