1221915812390

Names of 1221915812390

• Cardinal: 1221915812390 can be written as One trillion, two hundred twenty-one billion, nine hundred fifteen million, eight hundred twelve thousand, three hundred ninety.

Scientific notation

• Scientific notation: 1.22191581239 × 10¹²

Factors of 1221915812390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 5863857

Divisors of 1221915812390

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 7 10 13 14 26 35 65 70 91 130 182 229 455 458 910 1145 1603 2290 2977 3206 5954 8015 14885 16030 20839 29770 41678 104195 208390 5863601 11727202 29318005 41045207 58636010 76226813 82090414 152453626 205226035 381134065 410452070 533587691 762268130 1067175382 1342764629 2667938455 2685529258 5335876910 6713823145 9399352403 13427646290 17455940177 18798704806 34911880354 46996762015 87279700885 93993524030 122191581239 174559401770 244383162478 610957906195 1221915812390
• Sum of all divisors σ(n): 2718834975360
• Sum of proper divisors (its aliquot sum) s(n): 1496919162970
• 1221915812390 is an abundant number, because the sum of its proper divisors (1496919162970) is greater than itself. Its abundance is 275003350580

Bases of 1221915812390

• Binary: 10001110001111111110110111010001000100110₂
• Hexadecimal: 0x11C7FDBA226
• Base-36: FLC94IZQ

Squares and roots of 1221915812390

• 1221915812390 squared (1221915812390²) is 1493078252568713677512100
• 1221915812390 cubed (1221915812390³) is 1824415925949341377554502145554919000
• The square root of 1221915812390 is 1105403.0090378803
• The cube root of 1221915812390 is 10690.8875525335

Scales and comparisons

• 1,221,915,812,390 seconds is equal to 38,853 years, 7 weeks, 3 days, 2 hours, 59 minutes, 50 seconds.
• To count from 1 to 1,221,915,812,390 would take you about ninety-seven thousand, one hundred thirty-two 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 1221915812390 cubic inches would be around 890.9 feet tall.

Recreational maths with 1221915812390

• 1221915812390 backwards is 0932185191221
• The number of decimal digits it has is: 13
• The sum of 1221915812390's digits is 44
• More coming soon!