212312210 has 32 divisors (see below), whose sum is σ = 417897792. Its totient is φ = 77020480.

The previous prime is 212312173. The next prime is 212312231. The reversal of 212312210 is 12213212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49304 + ... + 53436.

It is an arithmetic number, because the mean of its divisors is an integer number (13059306).

Almost surely, 2^212312210 is an apocalyptic number.

212312210 is a deficient number, since it is larger than the sum of its proper divisors (205585582).

212312210 is a wasteful number, since it uses less digits than its factorization.

212312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212312210 is about 14570.9371695852. The cubic root of 212312210 is about 596.5657604642.

Adding to 212312210 its reverse (12213212), we get a palindrome (224525422).

The spelling of 212312210 in words is "two hundred twelve million, three hundred twelve thousand, two hundred ten".