12321022112112 has 80 divisors (see below), whose sum is σ = 36729519557120. Its totient is φ = 3486114429696.

The previous prime is 12321022112089. The next prime is 12321022112131. The reversal of 12321022112112 is 21121122012321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177973687 + ... + 178042902.

It is an arithmetic number, because the mean of its divisors is an integer number (459118994464).

Almost surely, 2^{12321022112112} is an apocalyptic number.

12321022112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12321022112112 is an abundant number, since it is smaller than the sum of its proper divisors (24408497445008).

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

12321022112112 is a wasteful number, since it uses less digits than its factorization.

12321022112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356016710 (or 356016704 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12321022112112 its reverse (21121122012321), we get a palindrome (33442144124433).

The spelling of 12321022112112 in words is "twelve trillion, three hundred twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred twelve".