12321210112 has 18 divisors (see below), whose sum is σ = 24594291008. Its totient is φ = 6160604928.

The previous prime is 12321210089. The next prime is 12321210113. The reversal of 12321210112 is 21101212321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321210113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24064608 + ... + 24065119.

Almost surely, 2^12321210112 is an apocalyptic number.

It is an amenable number.

12321210112 is a deficient number, since it is larger than the sum of its proper divisors (12273080896).

12321210112 is an frugal number, since it uses more digits than its factorization.

12321210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48129743 (or 48129729 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12321210112 its reverse (21101212321), we get a palindrome (33422422433).

The spelling of 12321210112 in words is "twelve billion, three hundred twenty-one million, two hundred ten thousand, one hundred twelve".