212390104 has 8 divisors (see below), whose sum is σ = 398231460. Its totient is φ = 106195048.

The previous prime is 212390093. The next prime is 212390137. The reversal of 212390104 is 401093212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13274374 + ... + 13274389.

Almost surely, 2^212390104 is an apocalyptic number.

It is an amenable number.

212390104 is a deficient number, since it is larger than the sum of its proper divisors (185841356).

212390104 is a wasteful number, since it uses less digits than its factorization.

212390104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548769 (or 26548765 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 212390104 is about 14573.6098479409. The cubic root of 212390104 is about 596.6387083987.

The spelling of 212390104 in words is "two hundred twelve million, three hundred ninety thousand, one hundred four".