12331322112 has 144 divisors (see below), whose sum is σ = 33808757472. Its totient is φ = 3987210240.

The previous prime is 12331322089. The next prime is 12331322117. The reversal of 12331322112 is 21122313321.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12331322117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18214318 + ... + 18214994.

It is an arithmetic number, because the mean of its divisors is an integer number (234783038).

Almost surely, 2^12331322112 is an apocalyptic number.

12331322112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12331322112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16904378736).

12331322112 is an abundant number, since it is smaller than the sum of its proper divisors (21477435360).

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

12331322112 is an equidigital number, since it uses as much as digits as its factorization.

12331322112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1360 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 12331322112 its reverse (21122313321), we get a palindrome (33453635433).

The spelling of 12331322112 in words is "twelve billion, three hundred thirty-one million, three hundred twenty-two thousand, one hundred twelve".