321215725104 has 40 divisors (see below), whose sum is σ = 856575270912. Its totient is φ = 103617975360.

The previous prime is 321215725087. The next prime is 321215725109. The reversal of 321215725104 is 401527512123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321215725109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107933904 + ... + 107936879.

Almost surely, 2^321215725104 is an apocalyptic number.

It is an amenable number.

321215725104 is an abundant number, since it is smaller than the sum of its proper divisors (535359545808).

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

321215725104 is a wasteful number, since it uses less digits than its factorization.

321215725104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215870825 (or 215870819 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 321215725104 in words is "three hundred twenty-one billion, two hundred fifteen million, seven hundred twenty-five thousand, one hundred four".