212211210 has 16 divisors (see below), whose sum is σ = 509306976. Its totient is φ = 56589648.

The previous prime is 212211193. The next prime is 212211269. The reversal of 212211210 is 12112212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3536824 + ... + 3536883.

It is an arithmetic number, because the mean of its divisors is an integer number (31831686).

Almost surely, 2^212211210 is an apocalyptic number.

212211210 is an abundant number, since it is smaller than the sum of its proper divisors (297095766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212211210 is a wasteful number, since it uses less digits than its factorization.

212211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073717.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 212211210 is about 14567.4709541499. The cubic root of 212211210 is about 596.4711471291.

Adding to 212211210 its reverse (12112212), we get a palindrome (224323422).

The spelling of 212211210 in words is "two hundred twelve million, two hundred eleven thousand, two hundred ten".