321320002122 has 48 divisors (see below), whose sum is σ = 795812359680. Its totient is φ = 91786926816.

The previous prime is 321320002063. The next prime is 321320002151. The reversal of 321320002122 is 221200023123.

321320002122 is a `hidden beast` number, since 321 + 320 + 0 + 0 + 2 + 1 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 321320002095 and 321320002104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363079 + ... + 880037.

It is an arithmetic number, because the mean of its divisors is an integer number (16579424160).

Almost surely, 2^321320002122 is an apocalyptic number.

321320002122 is an abundant number, since it is smaller than the sum of its proper divisors (474492357558).

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

321320002122 is a wasteful number, since it uses less digits than its factorization.

321320002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521907 (or 521904 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 321320002122 its reverse (221200023123), we get a palindrome (542520025245).

The spelling of 321320002122 in words is "three hundred twenty-one billion, three hundred twenty million, two thousand, one hundred twenty-two".