12213123331112 has 32 divisors (see below), whose sum is σ = 25512907547520. Its totient is φ = 5433304381440.

The previous prime is 12213123331093. The next prime is 12213123331139. The reversal of 12213123331112 is 21113332131221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476437273 + ... + 1476445544.

It is an arithmetic number, because the mean of its divisors is an integer number (797278360860).

Almost surely, 2^{12213123331112} is an apocalyptic number.

It is an amenable number.

12213123331112 is an abundant number, since it is smaller than the sum of its proper divisors (13299784216408).

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

12213123331112 is a wasteful number, since it uses less digits than its factorization.

12213123331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952882881 (or 2952882877 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

Adding to 12213123331112 its reverse (21113332131221), we get a palindrome (33326455462333).

The spelling of 12213123331112 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred thirty-one thousand, one hundred twelve".