# 21229128800

## 21,229,128,800 is an even composite number composed of six prime numbers multiplied together.

What does the number 21229128800 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 288 divisors.

21229128800 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.

## Prime factorization of 21229128800:

### 25 × 52 × 11 × 23 × 53 × 1979

(2 × 2 × 2 × 2 × 2 × 5 × 5 × 11 × 23 × 53 × 1979)

See below for interesting mathematical facts about the number 21229128800 from the Numbermatics database.

### Names of 21229128800

• Cardinal: 21229128800 can be written as Twenty-one billion, two hundred twenty-nine million, one hundred twenty-eight thousand, eight hundred.

### Scientific notation

• Scientific notation: 2.12291288 × 1010

### Factors of 21229128800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2073

### Divisors of 21229128800

• Number of divisors d(n): 288
• Complete list of divisors:
• Sum of all divisors σ(n): 60138650880
• Sum of proper divisors (its aliquot sum) s(n): 38909522080
• 21229128800 is an abundant number, because the sum of its proper divisors (38909522080) is greater than itself. Its abundance is 17680393280

### Bases of 21229128800

• Binary: 100111100010101101011001100011000002
• Base-36: 9R39WM8

### Squares and roots of 21229128800

• 21229128800 squared (212291288002) is 450675909606989440000
• 21229128800 cubed (212291288003) is 9567456932103936201999872000000
• The square root of 21229128800 is 145702.1921592123
• The cube root of 21229128800 is 2768.9220131707

### Scales and comparisons

How big is 21229128800?
• 21,229,128,800 seconds is equal to 675 years, 12 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,229,128,800 would take you about one thousand, three hundred fifty years!

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 21229128800 cubic inches would be around 230.7 feet tall.

### Recreational maths with 21229128800

• 21229128800 backwards is 00882192212
• The number of decimal digits it has is: 11
• The sum of 21229128800's digits is 35
• More coming soon!