213112210 has 16 divisors (see below), whose sum is σ = 383852376. Its totient is φ = 85189248.

The previous prime is 213112177. The next prime is 213112247. The reversal of 213112210 is 12211312.

It can be written as a sum of positive squares in 4 ways, for example, as 51796809 + 161315401 = 7197^2 + 12701^2 .

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, 11452 + ... + 23608.

Almost surely, 2^213112210 is an apocalyptic number.

213112210 is a deficient number, since it is larger than the sum of its proper divisors (170740166).

213112210 is a wasteful number, since it uses less digits than its factorization.

213112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13917.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 213112210 is about 14598.3632644211. The cubic root of 213112210 is about 597.3141150141.

Adding to 213112210 its reverse (12211312), we get a palindrome (225323522).

It can be divided in two parts, 2131 and 12210, that added together give a palindrome (14341).

The spelling of 213112210 in words is "two hundred thirteen million, one hundred twelve thousand, two hundred ten".