321021120123 has 12 divisors (see below), whose sum is σ = 505851462168. Its totient is φ = 194558254560.

The previous prime is 321021120089. The next prime is 321021120127.

321021120123 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 321021120123 - 2²⁸ = 320752684667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321021120096 and 321021120105.

It is not an unprimeable number, because it can be changed into a prime (321021120127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1621318690 + ... + 1621318887.

It is an arithmetic number, because the mean of its divisors is an integer number (42154288514).

Almost surely, 2^321021120123 is an apocalyptic number.

321021120123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

321021120123 is a deficient number, since it is larger than the sum of its proper divisors (184830342045).

321021120123 is a wasteful number, since it uses less digits than its factorization.

321021120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242637594 (or 3242637591 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

It can be divided in two parts, 321021 and 120123, that added together give a palindrome (441144).

The spelling of 321021120123 in words is "three hundred twenty-one billion, twenty-one million, one hundred twenty thousand, one hundred twenty-three".