212204670 has 32 divisors (see below), whose sum is σ = 531436032. Its totient is φ = 54127392.

The previous prime is 212204623. The next prime is 212204683. The reversal of 212204670 is 76402212.

It is a self number, because there is not a number n which added to its sum of digits gives 212204670.

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, 153082 + ... + 154461.

It is an arithmetic number, because the mean of its divisors is an integer number (16607376).

Almost surely, 2^212204670 is an apocalyptic number.

212204670 is an abundant number, since it is smaller than the sum of its proper divisors (319231362).

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

212204670 is a wasteful number, since it uses less digits than its factorization.

212204670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307576.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 212204670 is about 14567.2464796886. The cubic root of 212204670 is about 596.4650196467.

Adding to 212204670 its reverse (76402212), we get a palindrome (288606882).

The spelling of 212204670 in words is "two hundred twelve million, two hundred four thousand, six hundred seventy".