212412404 has 24 divisors (see below), whose sum is σ = 377830656. Its totient is φ = 104468000.

The previous prime is 212412397. The next prime is 212412413. The reversal of 212412404 is 404214212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232709 + ... + 233619.

It is an arithmetic number, because the mean of its divisors is an integer number (15742944).

Almost surely, 2^212412404 is an apocalyptic number.

It is an amenable number.

212412404 is a deficient number, since it is larger than the sum of its proper divisors (165418252).

212412404 is a wasteful number, since it uses less digits than its factorization.

212412404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 212412404 is about 14574.3749094086. The cubic root of 212412404 is about 596.6595891229.

Adding to 212412404 its reverse (404214212), we get a palindrome (616626616).

The spelling of 212412404 in words is "two hundred twelve million, four hundred twelve thousand, four hundred four".