321020113200 has 60 divisors (see below), whose sum is σ = 1028334433128. Its totient is φ = 85605363200.

The previous prime is 321020113187. The next prime is 321020113201. The reversal of 321020113200 is 2311020123.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 321020113200.

It is not an unprimeable number, because it can be changed into a prime (321020113201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 133757181 + ... + 133759580.

Almost surely, 2^321020113200 is an apocalyptic number.

321020113200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321020113200 is an abundant number, since it is smaller than the sum of its proper divisors (707314319928).

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

321020113200 is a wasteful number, since it uses less digits than its factorization.

321020113200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267516782 (or 267516771 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 321020113200 its reverse (2311020123), we get a palindrome (323331133323).

The spelling of 321020113200 in words is "three hundred twenty-one billion, twenty million, one hundred thirteen thousand, two hundred".