321313421220 has 72 divisors (see below), whose sum is σ = 988901824512. Its totient is φ = 77894160960.

The previous prime is 321313421207. The next prime is 321313421291. The reversal of 321313421220 is 22124313123.

It is a super-2 number, since 2×321313421220² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22121764 + ... + 22136283.

Almost surely, 2^321313421220 is an apocalyptic number.

321313421220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321313421220 is an abundant number, since it is smaller than the sum of its proper divisors (667588403292).

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

321313421220 is a wasteful number, since it uses less digits than its factorization.

321313421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44258081 (or 44258068 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 321313421220 its reverse (22124313123), we get a palindrome (343437734343).

The spelling of 321313421220 in words is "three hundred twenty-one billion, three hundred thirteen million, four hundred twenty-one thousand, two hundred twenty".