1221661421721
1,221,661,421,721 is an odd composite number composed of four prime numbers multiplied together.
1221661421721 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 1221661421721:
33 × 132 × 67 × 19992
(3 × 3 × 3 × 13 × 13 × 67 × 1999 × 1999)See below for interesting mathematical facts about the number 1221661421721 from the Numbermatics database.
Names of 1221661421721
- Cardinal: 1221661421721 can be written as One trillion, two hundred twenty-one billion, six hundred sixty-one million, four hundred twenty-one thousand, seven hundred twenty-one.
Scientific notation
- Scientific notation: 1.221661421721 × 1012
Factors of 1221661421721
Divisors of 1221661421721
- Number of divisors d(n): 72
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Complete list of divisors:
1 3 9 13 27 39 67 117 169 201 351 507 603 871 1521 1809 1999 2613 4563 5997 7839 11323 17991 23517 25987 33969 53973 77961 101907 133933 233883 305721 337831 401799 701649 1013493 1205397 1741129 3040479 3616191 3996001 5223387 9121437 11988003 15670161 22634677 35964009 47010483 51948013 67904031 107892027 155844039 203712093 267732067 467532117 611136279 675324169 803196201 1402596351 2025972507 2409588603 3480516871 6077917521 7228765809 10441550613 18233752563 31324651839 45246719323 93973955517 135740157969 407220473907 1221661421721
- Sum of all divisors σ(n): 1990044977760
- Sum of proper divisors (its aliquot sum) s(n): 768383556039
- 1221661421721 is a deficient number, because the sum of its proper divisors (768383556039) is less than itself. Its deficiency is 453277865682
Bases of 1221661421721
- Binary: 100011100011100001011000111110000100110012
- Hexadecimal: 0x11C70B1F099
- Base-36: FL81O1W9
Squares and roots of 1221661421721
- 1221661421721 squared (12216614217212) is 1492456629321375010601841
- 1221661421721 cubed (12216614217213) is 1823276687633682490866446523919988361
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The
square root of 1221661421721 is 1105287.9361148389 -
The
cube root of 1221661421721 is 10690.1455890347
Scales and comparisons
How big is 1221661421721?- 1,221,661,421,721 seconds is equal to 38,845 years, 2 weeks, 5 days, 18 hours, 55 minutes, 21 seconds.
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To count from 1 to 1,221,661,421,721 would take you about ninety-seven thousand, one hundred twelve 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 1221661421721 cubic inches would be around 890.8 feet tall.
Recreational maths with 1221661421721
- 1221661421721 backwards is 1271241661221
- The number of decimal digits it has is: 13
- The sum of 1221661421721's digits is 36
- More coming soon!
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