11821

11,821 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 11821 look like?

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

11821 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 11821:

11821

See below for interesting mathematical facts about the number 11821 from the Numbermatics database.


Names of 11821

  • Cardinal: 11821 can be written as Eleven thousand, eight hundred twenty-one.

Scientific notation

  • Scientific notation: 1.1821 × 104

Factors of 11821

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 11821

Divisors of 11821

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 11822
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 11821 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 11820

Bases of 11821

  • Binary: 101110001011012
  • Hexadecimal: 0x2E2D
  • Base-36: 94D

Squares and roots of 11821

  • 11821 squared (118212) is 139736041
  • 11821 cubed (118213) is 1651819740661
  • The square root of 11821 is 108.7244222793
  • The cube root of 11821 is 22.7798786261

Scales and comparisons

How big is 11821?
  • 11,821 seconds is equal to 3 hours, 17 minutes, 1 second.
  • To count from 1 to 11,821 would take you about three 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 11821 cubic inches would be around 1.9 feet tall.

Recreational maths with 11821

  • 11821 backwards is 12811
  • The number of decimal digits it has is: 5
  • The sum of 11821's digits is 13
  • More coming soon!

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"Number 11821 - Facts about the integer". Numbermatics.com. 2024. Web. 28 March 2024.

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Numbermatics. (2024). Number 11821 - Facts about the integer. Retrieved 28 March 2024, from https://numbermatics.com/n/11821/

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Numbermatics. 2024. "Number 11821 - Facts about the integer". https://numbermatics.com/n/11821/

The information we have on file for 11821 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 11821, math, Factors of 11821, curriculum, school, college, exams, university, Prime factorization of 11821, STEM, science, technology, engineering, physics, economics, calculator, eleven thousand, eight hundred twenty-one.

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