321123032120 has 64 divisors (see below), whose sum is σ = 790237749600. Its totient is φ = 116471764480.

The previous prime is 321123032119. The next prime is 321123032143. The reversal of 321123032120 is 21230321123.

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 = 321123032092 and 321123032101.

It is a congruent number.

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, 766919 + ... + 1109238.

Almost surely, 2^321123032120 is an apocalyptic number.

It is an amenable number.

321123032120 is an abundant number, since it is smaller than the sum of its proper divisors (469114717480).

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

321123032120 is a wasteful number, since it uses less digits than its factorization.

321123032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876568 (or 1876564 counting only the distinct ones).

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

Adding to 321123032120 its reverse (21230321123), we get a palindrome (342353353243).

The spelling of 321123032120 in words is "three hundred twenty-one billion, one hundred twenty-three million, thirty-two thousand, one hundred twenty".