212931903124 has 6 divisors (see below), whose sum is σ = 372630830474. Its totient is φ = 106465951560.

The previous prime is 212931903109. The next prime is 212931903143. The reversal of 212931903124 is 421309139212.

It can be written as a sum of positive squares in only one way, i.e., 175887972100 + 37043931024 = 419390^2 + 192468^2 .

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, 26616487887 + ... + 26616487894.

Almost surely, 2^212931903124 is an apocalyptic number.

It is an amenable number.

212931903124 is a deficient number, since it is larger than the sum of its proper divisors (159698927350).

212931903124 is a wasteful number, since it uses less digits than its factorization.

212931903124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53232975785 (or 53232975783 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 212931903124 in words is "two hundred twelve billion, nine hundred thirty-one million, nine hundred three thousand, one hundred twenty-four".