21121643106

Names of 21121643106

• Cardinal: 21121643106 can be written as Twenty-one billion, one hundred twenty-one million, six hundred forty-three thousand, one hundred six.

Scientific notation

• Scientific notation: 2.1121643106 × 10¹⁰

Factors of 21121643106

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 282

Divisors of 21121643106

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 9 18 27 31 54 62 81 93 97 149 162 186 194 243 279 291 298 447 486 558 582 837 873 894 1341 1674 1746 2511 2619 2682 3007 4023 4619 5022 5238 6014 7533 7857 8046 9021 9238 9409 12069 13857 14453 15066 15714 18042 18818 23571 24138 27063 27714 28227 28906 36207 41571 43359 47142 54126 56454 72414 81189 83142 84681 86718 124713 130077 162378 169362 243567 249426 254043 260154 291679 374139 390231 448043 487134 508086 583358 730701 748278 762129 780462 875037 896086 1122417 1170693 1344129 1401941 1461402 1524258 1750074 2244834 2286387 2341386 2625111 2688258 2803882 3512079 4032387 4205823 4572774 5250222 7024158 7875333 8064774 8411646 12097161 12617469 15750666 23625999 24194322 25234938 36291483 37852407 43460171 47251998 70877997 72582966 75704814 86920342 108874449 113557221 130380513 141755994 217748898 227114442 260761026 340671663 391141539 681343326 782283078 1173424617 2346849234 3520273851 7040547702 10560821553 21121643106
• Sum of all divisors σ(n): 49831891200
• Sum of proper divisors (its aliquot sum) s(n): 28710248094
• 21121643106 is an abundant number, because the sum of its proper divisors (28710248094) is greater than itself. Its abundance is 7588604988

Bases of 21121643106

• Binary: 10011101010111100101011001001100010₂
• Hexadecimal: 0x4EAF2B262
• Base-36: 9PBA44I

Squares and roots of 21121643106

• 21121643106 squared (21121643106²) is 446123807497237327236
• 21121643106 cubed (21121643106³) is 9422867843046493906860125435016
• The square root of 21121643106 is 145332.8700122585
• The cube root of 21121643106 is 2764.2409729605

Scales and comparisons

• 21,121,643,106 seconds is equal to 671 years, 31 weeks, 2 days, 11 hours, 5 minutes, 6 seconds.
• To count from 1 to 21,121,643,106 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 21121643106 cubic inches would be around 230.4 feet tall.

Recreational maths with 21121643106

• 21121643106 backwards is 60134612112
• 21121643106 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21121643106's digits is 27
• More coming soon!