212661204 has 48 divisors (see below), whose sum is σ = 568111488. Its totient is φ = 60651648.

The previous prime is 212661181. The next prime is 212661221. The reversal of 212661204 is 402166212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52914 + ... + 56790.

It is an arithmetic number, because the mean of its divisors is an integer number (11835656).

Almost surely, 2^212661204 is an apocalyptic number.

It is an amenable number.

212661204 is an abundant number, since it is smaller than the sum of its proper divisors (355450284).

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

212661204 is a wasteful number, since it uses less digits than its factorization.

212661204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 212661204 is about 14582.9079404624. The cubic root of 212661204 is about 596.8924552848.

The spelling of 212661204 in words is "two hundred twelve million, six hundred sixty-one thousand, two hundred four".