21,101 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 21101 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

21101 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 21101:


See below for interesting mathematical facts about the number 21101 from the Numbermatics database.

Names of 21101

  • Cardinal: 21101 can be written as Twenty-one thousand, one hundred one.

Scientific notation

  • Scientific notation: 2.1101 × 104

Factors of 21101

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 21101

Divisors of 21101

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 21102
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 21101 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21100

Bases of 21101

  • Binary: 1010010011011012
  • Hexadecimal: 0x526D
  • Base-36: GA5

Squares and roots of 21101

  • 21101 squared (211012) is 445252201
  • 21101 cubed (211013) is 9395266693301
  • The square root of 21101 is 145.2618325645
  • The cube root of 21101 is 27.6334014153

Scales and comparisons

How big is 21101?
  • 21,101 seconds is equal to 5 hours, 51 minutes, 41 seconds.
  • To count from 1 to 21,101 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 21101 cubic inches would be around 2.3 feet tall.

Recreational maths with 21101

  • 21101 backwards is 10112
  • The number of decimal digits it has is: 5
  • The sum of 21101's digits is 5
  • More coming soon!

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"Number 21101 - Facts about the integer". Numbermatics.com. 2024. Web. 15 June 2024.

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Numbermatics. (2024). Number 21101 - Facts about the integer. Retrieved 15 June 2024, from https://numbermatics.com/n/21101/

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The information we have on file for 21101 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!

Keywords: Divisors of 21101, math, Factors of 21101, curriculum, school, college, exams, university, Prime factorization of 21101, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, one hundred one.

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