# 211

## 211 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 211 look like?

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

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

## Prime factorization of 211:

### 211

See below for interesting mathematical facts about the number 211 from the Numbermatics database.

### Names of 211

• Cardinal: 211 can be written as Two hundred eleven.

### Scientific notation

• Scientific notation: 2.11 × 102

### Factors of 211

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 211

### Divisors of 211

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 212
• Sum of proper divisors (its aliquot sum) s(n): 1
• 211 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 210

### Bases of 211

• Binary: 110100112
• Base-36: 5V

### Squares and roots of 211

• 211 squared (2112) is 44521
• 211 cubed (2113) is 9393931
• The square root of 211 is 14.5258390463
• The cube root of 211 is 5.9533418131

### Scales and comparisons

How big is 211?
• 211 seconds is equal to 3 minutes, 31 seconds.
• To count from 1 to 211 would take you about forty-five seconds.

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 211 cubic inches would be around 0.5 feet tall.

### Recreational maths with 211

• 211 backwards is 112
• The number of decimal digits it has is: 3
• The sum of 211's digits is 4
• More coming soon!