12321021102112 has 48 divisors (see below), whose sum is σ = 25539695647200. Its totient is φ = 5834901588480.

The previous prime is 12321021102079. The next prime is 12321021102113. The reversal of 12321021102112 is 21120112012321.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12321021102112.

It is not an unprimeable number, because it can be changed into a prime (12321021102113) 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, 210412 + ... + 4968532.

It is an arithmetic number, because the mean of its divisors is an integer number (532076992650).

Almost surely, 2^{12321021102112} is an apocalyptic number.

It is an amenable number.

12321021102112 is an abundant number, since it is smaller than the sum of its proper divisors (13218674545088).

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

12321021102112 is a wasteful number, since it uses less digits than its factorization.

12321021102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762409 (or 4762401 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12321021102112 its reverse (21120112012321), we get a palindrome (33441133114433).

The spelling of 12321021102112 in words is "twelve trillion, three hundred twenty-one billion, twenty-one million, one hundred two thousand, one hundred twelve".