12312321112312 has 128 divisors (see below), whose sum is σ = 26223912187200. Its totient is φ = 5372428197888.

The previous prime is 12312321112283. The next prime is 12312321112339. The reversal of 12312321112312 is 21321112321321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3500800378 + ... + 3500803894.

Almost surely, 2^{12312321112312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12312321112312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13111956093600).

12312321112312 is an abundant number, since it is smaller than the sum of its proper divisors (13911591074888).

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

12312321112312 is a wasteful number, since it uses less digits than its factorization.

12312321112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705 (or 6701 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 12312321112312 its reverse (21321112321321), we get a palindrome (33633433433633).

The spelling of 12312321112312 in words is "twelve trillion, three hundred twelve billion, three hundred twenty-one million, one hundred twelve thousand, three hundred twelve".