213211112 has 32 divisors (see below), whose sum is σ = 405475200. Its totient is φ = 105095424.

The previous prime is 213211099. The next prime is 213211139. The reversal of 213211112 is 211112312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204689 + ... + 205727.

It is an arithmetic number, because the mean of its divisors is an integer number (12671100).

Almost surely, 2^213211112 is an apocalyptic number.

It is an amenable number.

213211112 is a deficient number, since it is larger than the sum of its proper divisors (192264088).

213211112 is a wasteful number, since it uses less digits than its factorization.

213211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1381 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 213211112 is about 14601.7503060421. The cubic root of 213211112 is about 597.4065020627.

Adding to 213211112 its reverse (211112312), we get a palindrome (424323424).

The spelling of 213211112 in words is "two hundred thirteen million, two hundred eleven thousand, one hundred twelve".