212956 has 6 divisors (see below), whose sum is σ = 372680. Its totient is φ = 106476.

The previous prime is 212923. The next prime is 212969. The reversal of 212956 is 659212.

It is a self number, because there is not a number n which added to its sum of digits gives 212956.

It is a congruent number.

It is an unprimeable number.

212956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26616 + ... + 26623.

2²¹²⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

212956 is a deficient number, since it is larger than the sum of its proper divisors (159724).

212956 is a wasteful number, since it uses less digits than its factorization.

212956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53243 (or 53241 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 212956 is about 461.4715592537. The cubic root of 212956 is about 59.7168136760.

The spelling of 212956 in words is "two hundred twelve thousand, nine hundred fifty-six".