212165912 has 32 divisors (see below), whose sum is σ = 455479200. Its totient is φ = 90760704.

The previous prime is 212165911. The next prime is 212165917. The reversal of 212165912 is 219561212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212165911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30014 + ... + 36402.

It is an arithmetic number, because the mean of its divisors is an integer number (14233725).

Almost surely, 2^212165912 is an apocalyptic number.

It is an amenable number.

212165912 is an abundant number, since it is smaller than the sum of its proper divisors (243313288).

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

212165912 is a wasteful number, since it uses less digits than its factorization.

212165912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995 (or 6991 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 212165912 is about 14565.9161057587. The cubic root of 212165912 is about 596.4287037654.

The spelling of 212165912 in words is "two hundred twelve million, one hundred sixty-five thousand, nine hundred twelve".