21100307220

Names of 21100307220

• Cardinal: 21100307220 can be written as Twenty-one billion, one hundred million, three hundred seven thousand, two hundred twenty.

Scientific notation

• Scientific notation: 2.110030722 × 10¹⁰

Factors of 21100307220

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 411

Divisors of 21100307220

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 243 270 324 401 405 486 540 729 802 810 972 1203 1215 1458 1604 1620 2005 2187 2406 2430 2916 3609 3645 4010 4374 4812 4860 6015 6561 7218 7290 8020 8748 10827 10935 12030 13122 14436 14580 18045 21654 21870 24060 26244 32481 32805 36090 43308 43740 54135 64962 65610 72180 97443 108270 129924 131220 160801 162405 194886 216540 292329 321602 324810 389772 482403 487215 584658 643204 649620 804005 876987 964806 974430 1169316 1447209 1461645 1608010 1753974 1929612 1948860 2412015 2630961 2894418 2923290 3216020 3507948 4341627 4384935 4824030 5261922 5788836 5846580 7236045 8683254 8769870 9648060 10523844 13024881 13154805 14472090 17366508 17539740 21708135 26049762 26309610 28944180 39074643 43416270 52099524 52619220 65124405 78149286 86832540 117223929 130248810 156298572 195373215 234447858 260497620 351671787 390746430 468895716 586119645 703343574 781492860 1055015361 1172239290 1406687148 1758358935 2110030722 2344478580 3516717870 4220061444 5275076805 7033435740 10550153610 21100307220
• Sum of all divisors σ(n): 66628746366
• Sum of proper divisors (its aliquot sum) s(n): 45528439146
• 21100307220 is an abundant number, because the sum of its proper divisors (45528439146) is greater than itself. Its abundance is 24428131926

Bases of 21100307220

• Binary: 10011101001101011010010001100010100₂
• Hexadecimal: 0x4E9AD2314
• Base-36: 9OYKT90

Squares and roots of 21100307220

• 21100307220 squared (21100307220²) is 445222964778384128400
• 21100307220 cubed (21100307220³) is 9394341338223144324411927048000
• The square root of 21100307220 is 145259.4479543413
• The cube root of 21100307220 is 2763.3098995631

Scales and comparisons

• 21,100,307,220 seconds is equal to 670 years, 48 weeks, 12 hours, 27 minutes.
• To count from 1 to 21,100,307,220 would take you about one thousand, three hundred forty-one 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 21100307220 cubic inches would be around 230.3 feet tall.

Recreational maths with 21100307220

• 21100307220 backwards is 02270300112
• 21100307220 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21100307220's digits is 18
• More coming soon!