121312154985

Names of 121312154985

• Cardinal: 121312154985 can be written as One hundred twenty-one billion, three hundred twelve million, one hundred fifty-four thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 1.21312154985 × 10¹¹

Factors of 121312154985

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3557

Divisors of 121312154985

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 5 7 15 21 35 49 105 147 223 245 669 735 1115 1561 3319 3345 4683 7805 9957 10927 16595 23233 23415 32781 49729 49785 54635 69699 116165 149187 162631 163905 248645 348103 348495 487893 740137 745935 813155 1044309 1740515 2220411 2436721 2439465 3700685 5180959 5221545 7310163 11102055 12183605 15542877 25904795 36266713 36550815 77714385 108800139 165050551 181333565 495151653 544000695 825252755 1155353857 2475758265 3466061571 5776769285 8087476999 17330307855 24262430997 40437384995 121312154985
• Sum of all divisors σ(n): 226874537280
• Sum of proper divisors (its aliquot sum) s(n): 105562382295
• 121312154985 is a deficient number, because the sum of its proper divisors (105562382295) is less than itself. Its deficiency is 15749772690

Bases of 121312154985

• Binary: 1110000111110110001001001010101101001₂
• Hexadecimal: 0x1C3EC49569
• Base-36: 1JQA4HUX

Squares and roots of 121312154985

• 121312154985 squared (121312154985²) is 14716638947104660350225
• 121312154985 cubed (121312154985³) is 1785307184809447773422279579621625
• The square root of 121312154985 is 348298.9448519763
• The cube root of 121312154985 is 4950.3370852987

Scales and comparisons

• 121,312,154,985 seconds is equal to 3,857 years, 18 weeks, 1 day, 20 hours, 49 minutes, 45 seconds.
• To count from 1 to 121,312,154,985 would take you about seven thousand, seven hundred fourteen 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 121312154985 cubic inches would be around 412.5 feet tall.

Recreational maths with 121312154985

• 121312154985 backwards is 589451213121
• The number of decimal digits it has is: 12
• The sum of 121312154985's digits is 42
• More coming soon!