320012123212100 has 72 divisors (see below), whose sum is σ = 759666156379200. Its totient is φ = 116043899689600.

The previous prime is 320012123212043. The next prime is 320012123212123. The reversal of 320012123212100 is 1212321210023.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 404786315 + ... + 405576114.

It is an arithmetic number, because the mean of its divisors is an integer number (10550918838600).

Almost surely, 2^{320012123212100} is an apocalyptic number.

It is an amenable number.

320012123212100 is an abundant number, since it is smaller than the sum of its proper divisors (439654033167100).

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

320012123212100 is a wasteful number, since it uses less digits than its factorization.

320012123212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810362813 (or 810362806 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 320012123212100 its reverse (1212321210023), we get a palindrome (321224444422123).

The spelling of 320012123212100 in words is "three hundred twenty trillion, twelve billion, one hundred twenty-three million, two hundred twelve thousand, one hundred".