212162211 has 6 divisors (see below), whose sum is σ = 306456540. Its totient is φ = 141441468.

The previous prime is 212162177. The next prime is 212162213. The reversal of 212162211 is 112261212.

212162211 is a `hidden beast` number, since 21 + 21 + 622 + 1 + 1 = 666.

212162211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212162211 - 2¹¹ = 212160163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212162213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11786781 + ... + 11786798.

It is an arithmetic number, because the mean of its divisors is an integer number (51076090).

Almost surely, 2^212162211 is an apocalyptic number.

212162211 is a deficient number, since it is larger than the sum of its proper divisors (94294329).

212162211 is a wasteful number, since it uses less digits than its factorization.

212162211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23573585 (or 23573582 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 212162211 is about 14565.7890620454. The cubic root of 212162211 is about 596.4252357319.

Subtracting from 212162211 its reverse (112261212), we obtain a palindrome (99900999).

The spelling of 212162211 in words is "two hundred twelve million, one hundred sixty-two thousand, two hundred eleven".