321213120120 has 96 divisors (see below), whose sum is σ = 1044013810320. Its totient is φ = 85650992640.

The previous prime is 321213120103. The next prime is 321213120121. The reversal of 321213120120 is 21021312123.

321213120120 is a `hidden beast` number, since 321 + 21 + 312 + 0 + 12 + 0 = 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 = 321213120093 and 321213120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213120121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8870692 + ... + 8906828.

Almost surely, 2^321213120120 is an apocalyptic number.

321213120120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321213120120 is an abundant number, since it is smaller than the sum of its proper divisors (722800690200).

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

321213120120 is a wasteful number, since it uses less digits than its factorization.

321213120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60845 (or 60838 counting only the distinct ones).

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

Adding to 321213120120 its reverse (21021312123), we get a palindrome (342234432243).

The spelling of 321213120120 in words is "three hundred twenty-one billion, two hundred thirteen million, one hundred twenty thousand, one hundred twenty".