12221320321104 has 20 divisors (see below), whose sum is σ = 31571744162976. Its totient is φ = 4073773440352.

The previous prime is 12221320321087. The next prime is 12221320321117. The reversal of 12221320321104 is 40112302312221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127305419964 + ... + 127305420059.

Almost surely, 2^{12221320321104} is an apocalyptic number.

It is an amenable number.

12221320321104 is an abundant number, since it is smaller than the sum of its proper divisors (19350423841872).

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

12221320321104 is a wasteful number, since it uses less digits than its factorization.

12221320321104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254610840034 (or 254610840028 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12221320321104 its reverse (40112302312221), we get a palindrome (52333622633325).

The spelling of 12221320321104 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty million, three hundred twenty-one thousand, one hundred four".