212164011 has 6 divisors (see below), whose sum is σ = 306459140. Its totient is φ = 141442668.

The previous prime is 212163989. The next prime is 212164027. The reversal of 212164011 is 110461212.

212164011 is a `hidden beast` number, since 2 + 1 + 21 + 640 + 1 + 1 = 666.

It is not a de Polignac number, because 212164011 - 2¹⁸ = 211901867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212162011) 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, 11786881 + ... + 11786898.

Almost surely, 2^212164011 is an apocalyptic number.

212164011 is a deficient number, since it is larger than the sum of its proper divisors (94295129).

212164011 is a wasteful number, since it uses less digits than its factorization.

212164011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23573785 (or 23573782 counting only the distinct ones).

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

The square root of 212164011 is about 14565.8508505339. The cubic root of 212164011 is about 596.4269224325.

The spelling of 212164011 in words is "two hundred twelve million, one hundred sixty-four thousand, eleven".