212665132 has 12 divisors (see below), whose sum is σ = 372292200. Its totient is φ = 106295936.

The previous prime is 212665127. The next prime is 212665151. The reversal of 212665132 is 231566212.

It is a self number, because there is not a number n which added to its sum of digits gives 212665132.

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, 7119 + ... + 21817.

It is an arithmetic number, because the mean of its divisors is an integer number (31024350).

Almost surely, 2^212665132 is an apocalyptic number.

It is an amenable number.

212665132 is a deficient number, since it is larger than the sum of its proper divisors (159627068).

212665132 is a wasteful number, since it uses less digits than its factorization.

212665132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18320 (or 18318 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 212665132 is about 14583.0426180547. The cubic root of 212665132 is about 596.8961302681.

The spelling of 212665132 in words is "two hundred twelve million, six hundred sixty-five thousand, one hundred thirty-two".