1212855831204 has 24 divisors (see below), whose sum is σ = 2846355308160. Its totient is φ = 401948367264.

The previous prime is 1212855831139. The next prime is 1212855831217. The reversal of 1212855831204 is 4021385582121.

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, 292111564 + ... + 292115715.

It is an arithmetic number, because the mean of its divisors is an integer number (118598137840).

Almost surely, 2^{1212855831204} is an apocalyptic number.

It is an amenable number.

1212855831204 is an abundant number, since it is smaller than the sum of its proper divisors (1633499476956).

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

1212855831204 is a wasteful number, since it uses less digits than its factorization.

1212855831204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584227459 (or 584227457 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 1212855831204 in words is "one trillion, two hundred twelve billion, eight hundred fifty-five million, eight hundred thirty-one thousand, two hundred four".