320421222012 has 24 divisors (see below), whose sum is σ = 771767245312. Its totient is φ = 103361684400.

The previous prime is 320421221987. The next prime is 320421222019. The reversal of 320421222012 is 210222124023.

It is a self number, because there is not a number n which added to its sum of digits gives 320421222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320421222019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430673314 + ... + 430674057.

Almost surely, 2^320421222012 is an apocalyptic number.

It is an amenable number.

320421222012 is an abundant number, since it is smaller than the sum of its proper divisors (451346023300).

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

320421222012 is a wasteful number, since it uses less digits than its factorization.

320421222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861347409 (or 861347407 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 320421222012 its reverse (210222124023), we get a palindrome (530643346035).

The spelling of 320421222012 in words is "three hundred twenty billion, four hundred twenty-one million, two hundred twenty-two thousand, twelve".