1221159966

Names of 1221159966

• Cardinal: 1221159966 can be written as One billion, two hundred twenty-one million, one hundred fifty-nine thousand, nine hundred sixty-six.

Scientific notation

• Scientific notation: 1.221159966 × 10⁹

Factors of 1221159966

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1785

Divisors of 1221159966

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 13 26 39 78 97 103 194 206 291 309 582 618 1261 1339 1567 2522 2678 3134 3783 4017 4701 7566 8034 9402 9991 19982 20371 29973 40742 59946 61113 122226 129883 151999 161401 259766 303998 322802 389649 455997 484203 779298 911994 968406 1975987 2098213 3951974 4196426 5927961 6294639 11855922 12589278 15655897 31311794 46967691 93935382 203526661 407053322 610579983 1221159966
• Sum of all divisors σ(n): 2684817408
• Sum of proper divisors (its aliquot sum) s(n): 1463657442
• 1221159966 is an abundant number, because the sum of its proper divisors (1463657442) is greater than itself. Its abundance is 242497476

Bases of 1221159966

• Binary: 1001000110010010110110000011110₂
• Hexadecimal: 0x48C96C1E
• Base-36: K71P26

Squares and roots of 1221159966

• 1221159966 squared (1221159966²) is 1491231662561121156
• 1221159966 cubed (1221159966³) is 1821032406351262183782840696
• The square root of 1221159966 is 34945.0993130651
• The cube root of 1221159966 is 1068.8682726467

Scales and comparisons

• 1,221,159,966 seconds is equal to 38 years, 43 weeks, 19 hours, 6 minutes, 6 seconds.
• To count from 1 to 1,221,159,966 would take you about seventy-seven 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 1221159966 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221159966

• 1221159966 backwards is 6699511221
• The number of decimal digits it has is: 10
• The sum of 1221159966's digits is 42
• More coming soon!