21,201 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21201 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

21201 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 21201:

3 × 37 × 191

See below for interesting mathematical facts about the number 21201 from the Numbermatics database.

Names of 21201

  • Cardinal: 21201 can be written as Twenty-one thousand, two hundred one.

Scientific notation

  • Scientific notation: 2.1201 × 104

Factors of 21201

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 231

Divisors of 21201

  • Number of divisors d(n): 8
  • Complete list of divisors:
  • Sum of all divisors σ(n): 29184
  • Sum of proper divisors (its aliquot sum) s(n): 7983
  • 21201 is a deficient number, because the sum of its proper divisors (7983) is less than itself. Its deficiency is 13218

Bases of 21201

  • Binary: 1010010110100012
  • Hexadecimal: 0x52D1
  • Base-36: GCX

Squares and roots of 21201

  • 21201 squared (212012) is 449482401
  • 21201 cubed (212013) is 9529476383601
  • The square root of 21201 is 145.6056317591
  • The cube root of 21201 is 27.6769852319

Scales and comparisons

How big is 21201?
  • 21,201 seconds is equal to 5 hours, 53 minutes, 21 seconds.
  • To count from 1 to 21,201 would take you about five hours.

    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 21201 cubic inches would be around 2.3 feet tall.

Recreational maths with 21201

  • 21201 backwards is 10212
  • The number of decimal digits it has is: 5
  • The sum of 21201's digits is 6
  • More coming soon!

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The information we have on file for 21201 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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