321232021122320 has 480 divisors, whose sum is σ = 943624137189888. Its totient is φ = 99547176960000.

The previous prime is 321232021122293. The next prime is 321232021122359. The reversal of 321232021122320 is 23221120232123.

It is a super-2 number, since 2×321232021122320² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321232021122320.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21371293205 + ... + 21371308235.

Almost surely, 2^{321232021122320} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321232021122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471812068594944).

321232021122320 is an abundant number, since it is smaller than the sum of its proper divisors (622392116067568).

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

321232021122320 is a wasteful number, since it uses less digits than its factorization.

321232021122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16871 (or 16854 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 321232021122320 its reverse (23221120232123), we get a palindrome (344453141354443).

The spelling of 321232021122320 in words is "three hundred twenty-one trillion, two hundred thirty-two billion, twenty-one million, one hundred twenty-two thousand, three hundred twenty".