2121

Names of 2121

• Cardinal: 2121 can be written as Two thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 2.121 × 10³

Factors of 2121

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 111

Divisors of 2121

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 7 21 101 303 707 2121
• Sum of all divisors σ(n): 3264
• Sum of proper divisors (its aliquot sum) s(n): 1143
• 2121 is a deficient number, because the sum of its proper divisors (1143) is less than itself. Its deficiency is 978

Bases of 2121

• Binary: 100001001001₂
• Hexadecimal: 0x849
• Base-36: 1MX

Squares and roots of 2121

• 2121 squared (2121²) is 4498641
• 2121 cubed (2121³) is 9541617561
• The square root of 2121 is 46.0543157587
• The cube root of 2121 is 12.8483361207

Scales and comparisons

• 2,121 seconds is equal to 35 minutes, 21 seconds.
• To count from 1 to 2,121 would take you about thirty-five minutes.

  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 2121 cubic inches would be around 1.1 feet tall.

Recreational maths with 2121

• 2121 backwards is 1212
• The number of decimal digits it has is: 4
• The sum of 2121's digits is 6
• More coming soon!