# 2121

## 2,121 is an odd composite number composed of three prime numbers multiplied together.

What does the number 2121 look like?

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

2121 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 2121:

### 3 × 7 × 101

See below for interesting mathematical facts about the number 2121 from the Numbermatics database.

### 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:
• 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
• 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

How big is 2121?
• 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!