212313211 has 32 divisors (see below), whose sum is σ = 246758400. Its totient is φ = 180960000.

The previous prime is 212313197. The next prime is 212313251. The reversal of 212313211 is 112313212.

It is a cyclic number.

It is not a de Polignac number, because 212313211 - 2⁷ = 212313083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212313251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2102061 + ... + 2102161.

It is an arithmetic number, because the mean of its divisors is an integer number (7711200).

Almost surely, 2^212313211 is an apocalyptic number.

212313211 is a deficient number, since it is larger than the sum of its proper divisors (34445189).

212313211 is a wasteful number, since it uses less digits than its factorization.

212313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its digits is 72, while the sum is 16.

The square root of 212313211 is about 14570.9715187423. The cubic root of 212313211 is about 596.5666980164.

Adding to 212313211 its reverse (112313212), we get a palindrome (324626423).

Subtracting from 212313211 its reverse (112313212), we obtain a palindrome (99999999).

It can be divided in two parts, 21231 and 3211, that added together give a palindrome (24442).

The spelling of 212313211 in words is "two hundred twelve million, three hundred thirteen thousand, two hundred eleven".