321221332104 has 32 divisors (see below), whose sum is σ = 804010536000. Its totient is φ = 106946149952.

The previous prime is 321221332093. The next prime is 321221332121. The reversal of 321221332104 is 401233122123.

It is a super-2 number, since 2×321221332104² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 7956159 + ... + 7996430.

It is an arithmetic number, because the mean of its divisors is an integer number (25125329250).

Almost surely, 2^321221332104 is an apocalyptic number.

It is an amenable number.

321221332104 is an abundant number, since it is smaller than the sum of its proper divisors (482789203896).

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

321221332104 is a wasteful number, since it uses less digits than its factorization.

321221332104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15953437 (or 15953433 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 321221332104 its reverse (401233122123), we get a palindrome (722454454227).

The spelling of 321221332104 in words is "three hundred twenty-one billion, two hundred twenty-one million, three hundred thirty-two thousand, one hundred four".