321013123220444 has 24 divisors (see below), whose sum is σ = 564611746739040. Its totient is φ = 159696525833984.

The previous prime is 321013123220411. The next prime is 321013123220509. The reversal of 321013123220444 is 444022321310123.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 321013123220444.

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, 129337289 + ... + 131795904.

It is an arithmetic number, because the mean of its divisors is an integer number (23525489447460).

Almost surely, 2^{321013123220444} is an apocalyptic number.

It is an amenable number.

321013123220444 is a deficient number, since it is larger than the sum of its proper divisors (243598623518596).

321013123220444 is a wasteful number, since it uses less digits than its factorization.

321013123220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261134749 (or 261134747 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 321013123220444 its reverse (444022321310123), we get a palindrome (765035444530567).

The spelling of 321013123220444 in words is "three hundred twenty-one trillion, thirteen billion, one hundred twenty-three million, two hundred twenty thousand, four hundred forty-four".