12421957786120021

Names of 12421957786120021

• Cardinal: 12421957786120021 can be written as Twelve quadrillion, four hundred twenty-one trillion, nine hundred fifty-seven billion, seven hundred eighty-six million, one hundred twenty thousand and twenty-one.

Scientific notation

• Scientific notation: 1.2421957786120021 × 10¹⁶

Factors of 12421957786120021

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 737133

Divisors of 12421957786120021

• Number of divisors d(n): 12
• Complete list of divisors:
  1 31 739 22909 736363 22827253 544172257 16869339967 542230467769 16809144500839 400708315681291 12421957786120021
• Sum of all divisors σ(n): 12840034913869440
• Sum of proper divisors (its aliquot sum) s(n): 418077127749419
• 12421957786120021 is a deficient number, because the sum of its proper divisors (418077127749419) is less than itself. Its deficiency is 12003880658370602

Bases of 12421957786120021

• Binary: 101100001000011011010001101101010000011010111101010101₂
• Hexadecimal: 0x2C21B46D41AF55
• Base-36: 3EB7SMKERMD

Squares and roots of 12421957786120021

• 12421957786120021 squared (12421957786120021²) is 154305035240147813386881417040441
• 12421957786120021 cubed (12421957786120021³) is 1916770633938878354926604429374726051378236769261
• The square root of 12421957786120021 is 111453837.0183818347
• The cube root of 12421957786120021 is 231595.4465327063

Scales and comparisons

• 12,421,957,786,120,021 seconds is equal to 394,979,833 years, 49 weeks, 6 days, 13 hours, 47 minutes, 1 second.
• To count from 1 to 12,421,957,786,120,021 would take you about one billion, one hundred eighty-four million, nine hundred thirty-nine thousand, five hundred 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 12421957786120021 cubic inches would be around 19299.6 feet tall.

Recreational maths with 12421957786120021

• 12421957786120021 backwards is 12002168775912421
• The number of decimal digits it has is: 17
• The sum of 12421957786120021's digits is 58
• More coming soon!