212256012 has 12 divisors (see below), whose sum is σ = 495264056. Its totient is φ = 70752000.

The previous prime is 212256001. The next prime is 212256047. The reversal of 212256012 is 210652212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×212256012² = 90105229260288288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212256012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8843989 + ... + 8844012.

Almost surely, 2^212256012 is an apocalyptic number.

It is an amenable number.

212256012 is an abundant number, since it is smaller than the sum of its proper divisors (283008044).

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

212256012 is a wasteful number, since it uses less digits than its factorization.

212256012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17688008 (or 17688006 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 212256012 is about 14569.0086141782. The cubic root of 212256012 is about 596.5131198096.

The spelling of 212256012 in words is "two hundred twelve million, two hundred fifty-six thousand, twelve".