# 21201

## 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
• 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!