21621220010

Names of 21621220010

• Cardinal: 21621220010 can be written as Twenty-one billion, six hundred twenty-one million, two hundred twenty thousand and ten.

Scientific notation

• Scientific notation: 2.162122001 × 10¹⁰

Factors of 21621220010

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 124863

Divisors of 21621220010

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 10 13 26 31 43 62 65 86 130 155 215 310 403 430 559 806 1118 1333 2015 2666 2795 4030 5590 6665 13330 17329 34658 86645 124769 173290 249538 623845 1247690 1621997 3243994 3867839 5365067 7735678 8109985 10730134 16219970 19339195 26825335 38678390 50281907 53650670 69745871 100563814 139491742 166317077 251409535 332634154 348729355 502819070 697458710 831585385 1663170770 2162122001 4324244002 10810610005 21621220010
• Sum of all divisors σ(n): 44270392320
• Sum of proper divisors (its aliquot sum) s(n): 22649172310
• 21621220010 is an abundant number, because the sum of its proper divisors (22649172310) is greater than itself. Its abundance is 1027952300

Bases of 21621220010

• Binary: 10100001000101110011010001010101010₂
• Hexadecimal: 0x508B9A2AA
• Base-36: 9XKPS4Q

Squares and roots of 21621220010

• 21621220010 squared (21621220010²) is 467477154720824400100
• 21621220010 cubed (21621220010³) is 10107426411867754483138366001000
• The square root of 21621220010 is 147041.5587852631
• The cube root of 21621220010 is 2785.8649883631

Scales and comparisons

• 21,621,220,010 seconds is equal to 687 years, 25 weeks, 2 days, 14 hours, 26 minutes, 50 seconds.
• To count from 1 to 21,621,220,010 would take you about one thousand, three hundred seventy-four 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 21621220010 cubic inches would be around 232.2 feet tall.

Recreational maths with 21621220010

• 21621220010 backwards is 01002212612
• The number of decimal digits it has is: 11
• The sum of 21621220010's digits is 17
• More coming soon!