321320020122 has 32 divisors (see below), whose sum is σ = 714123734400. Its totient is φ = 107094786624.

The previous prime is 321320020051. The next prime is 321320020123. The reversal of 321320020122 is 221020023123.

321320020122 is a `hidden beast` number, since 321 + 3 + 200 + 20 + 122 = 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 = 321320020095 and 321320020104.

It is not an unprimeable number, because it can be changed into a prime (321320020123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167779 + ... + 819017.

It is an arithmetic number, because the mean of its divisors is an integer number (22316366700).

Almost surely, 2^321320020122 is an apocalyptic number.

321320020122 is an abundant number, since it is smaller than the sum of its proper divisors (392803714278).

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

321320020122 is a wasteful number, since it uses less digits than its factorization.

321320020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660387 (or 660381 counting only the distinct ones).

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

Adding to 321320020122 its reverse (221020023123), we get a palindrome (542340043245).

The spelling of 321320020122 in words is "three hundred twenty-one billion, three hundred twenty million, twenty thousand, one hundred twenty-two".