12210721

Names of 12210721

• Cardinal: 12210721 can be written as Twelve million, two hundred ten thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.2210721 × 10⁷

Factors of 12210721

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 12210721

Divisors of 12210721

• Number of divisors d(n): 2
• Complete list of divisors:
  1 12210721
• Sum of all divisors σ(n): 12210722
• Sum of proper divisors (its aliquot sum) s(n): 1
• 12210721 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 12210720

Bases of 12210721

• Binary: 101110100101001000100001₂
• Hexadecimal: 0xBA5221
• Base-36: 79PUP

Squares and roots of 12210721

• 12210721 squared (12210721²) is 149101707339841
• 12210721 cubed (12210721³) is 1820639348950450635361
• The square root of 12210721 is 3494.3842089843
• The cube root of 12210721 is 230.2751653129

Scales and comparisons

• 12,210,721 seconds is equal to 20 weeks, 1 day, 7 hours, 52 minutes, 1 second.
• To count from 1 to 12,210,721 would take you about thirty weeks!

  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 12210721 cubic inches would be around 19.2 feet tall.

Recreational maths with 12210721

• 12210721 backwards is 12701221
• The number of decimal digits it has is: 8
• The sum of 12210721's digits is 16
• More coming soon!