321102120012 has 48 divisors (see below), whose sum is σ = 773516900352. Its totient is φ = 103595958720.

The previous prime is 321102120007. The next prime is 321102120023. The reversal of 321102120012 is 210021201123.

It is a junction number, because it is equal to n+sod(n) for n = 321102119973 and 321102120000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1808398 + ... + 1978005.

It is an arithmetic number, because the mean of its divisors is an integer number (16114935424).

Almost surely, 2^321102120012 is an apocalyptic number.

It is an amenable number.

321102120012 is an abundant number, since it is smaller than the sum of its proper divisors (452414780340).

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

321102120012 is a wasteful number, since it uses less digits than its factorization.

321102120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786638 (or 3786636 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 321102120012 its reverse (210021201123), we get a palindrome (531123321135).

The spelling of 321102120012 in words is "three hundred twenty-one billion, one hundred two million, one hundred twenty thousand, twelve".