12121561788

Names of 12121561788

• Cardinal: 12121561788 can be written as Twelve billion, one hundred twenty-one million, five hundred sixty-one thousand, seven hundred eighty-eight.

Scientific notation

• Scientific notation: 1.2121561788 × 10¹⁰

Factors of 12121561788

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 34914

Divisors of 12121561788

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 601 1202 1803 2404 3606 4207 7212 8414 12621 16828 25242 29449 34301 50484 58898 68602 88347 102903 117796 137204 176694 205806 240107 353388 411612 480214 720321 960428 1440642 1680749 2881284 3361498 5042247 6722996 10084494 20168988 20614901 41229802 61844703 82459604 123689406 144304307 247378812 288608614 432912921 577217228 865825842 1010130149 1731651684 2020260298 3030390447 4040520596 6060780894 12121561788
• Sum of all divisors σ(n): 32957087184
• Sum of proper divisors (its aliquot sum) s(n): 20835525396
• 12121561788 is an abundant number, because the sum of its proper divisors (20835525396) is greater than itself. Its abundance is 8713963608

Bases of 12121561788

• Binary: 1011010010100000000101101010111100₂
• Hexadecimal: 0x2D2805ABC
• Base-36: 5KGV4XO

Squares and roots of 12121561788

• 12121561788 squared (12121561788²) is 146932260180301756944
• 12121561788 cubed (12121561788³) is 1781048470426019767281654055872
• The square root of 12121561788 is 110097.9645043449
• The cube root of 12121561788 is 2297.1332770425

Scales and comparisons

• 12,121,561,788 seconds is equal to 385 years, 22 weeks, 1 day, 20 hours, 29 minutes, 48 seconds.
• To count from 1 to 12,121,561,788 would take you about seven hundred seventy 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 12121561788 cubic inches would be around 191.4 feet tall.

Recreational maths with 12121561788

• 12121561788 backwards is 88716512121
• 12121561788 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12121561788's digits is 42
• More coming soon!