321214221025812 has 48 divisors (see below), whose sum is σ = 832789253470720. Its totient is φ = 107069909999616.

The previous prime is 321214221025811. The next prime is 321214221025861. The reversal of 321214221025812 is 218520122412123.

321214221025812 is a `hidden beast` number, since 3 + 2 + 1 + 21 + 42 + 2 + 10 + 2 + 581 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321214221025811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13018093 + ... + 28493844.

Almost surely, 2^{321214221025812} is an apocalyptic number.

It is an amenable number.

321214221025812 is an abundant number, since it is smaller than the sum of its proper divisors (511575032444908).

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

321214221025812 is a wasteful number, since it uses less digits than its factorization.

321214221025812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41583597 (or 41583589 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 321214221025812 its reverse (218520122412123), we get a palindrome (539734343437935).

The spelling of 321214221025812 in words is "three hundred twenty-one trillion, two hundred fourteen billion, two hundred twenty-one million, twenty-five thousand, eight hundred twelve".