321321023112 has 64 divisors (see below), whose sum is σ = 832724089920. Its totient is φ = 103238247168.

The previous prime is 321321023087. The next prime is 321321023131. The reversal of 321321023112 is 211320123123.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595863 + ... + 1785894.

It is an arithmetic number, because the mean of its divisors is an integer number (13011313905).

Almost surely, 2^321321023112 is an apocalyptic number.

It is an amenable number.

321321023112 is an abundant number, since it is smaller than the sum of its proper divisors (511403066808).

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

321321023112 is a wasteful number, since it uses less digits than its factorization.

321321023112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381910 (or 3381906 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321321023112 its reverse (211320123123), we get a palindrome (532641146235).

The spelling of 321321023112 in words is "three hundred twenty-one billion, three hundred twenty-one million, twenty-three thousand, one hundred twelve".