211013227 has 4 divisors (see below), whose sum is σ = 211340016. Its totient is φ = 210686440.

The previous prime is 211013161. The next prime is 211013237. The reversal of 211013227 is 722310112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211013227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211013237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162424 + ... + 163717.

It is an arithmetic number, because the mean of its divisors is an integer number (52835004).

Almost surely, 2^211013227 is an apocalyptic number.

211013227 is a deficient number, since it is larger than the sum of its proper divisors (326789).

211013227 is an equidigital number, since it uses as much as digits as its factorization.

211013227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326788.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 211013227 is about 14526.2943313152. The cubic root of 211013227 is about 595.3466209990.

Adding to 211013227 its reverse (722310112), we get a palindrome (933323339).

The spelling of 211013227 in words is "two hundred eleven million, thirteen thousand, two hundred twenty-seven".