321123230120 has 128 divisors (see below), whose sum is σ = 909078508800. Its totient is φ = 99171993600.

The previous prime is 321123230101. The next prime is 321123230123. The reversal of 321123230120 is 21032321123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 321123230092 and 321123230101.

It is not an unprimeable number, because it can be changed into a prime (321123230123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142541 + ... + 813980.

It is an arithmetic number, because the mean of its divisors is an integer number (7102175850).

Almost surely, 2^321123230120 is an apocalyptic number.

It is an amenable number.

321123230120 is an abundant number, since it is smaller than the sum of its proper divisors (587955278680).

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

321123230120 is a wasteful number, since it uses less digits than its factorization.

321123230120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956659 (or 956655 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 321123230120 its reverse (21032321123), we get a palindrome (342155551243).

The spelling of 321123230120 in words is "three hundred twenty-one billion, one hundred twenty-three million, two hundred thirty thousand, one hundred twenty".