12112233312 has 96 divisors (see below), whose sum is σ = 32540320512. Its totient is φ = 3943407104.

The previous prime is 12112233299. The next prime is 12112233317. The reversal of 12112233312 is 21333221121.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112233317) 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, 1149733 + ... + 1160219.

It is an arithmetic number, because the mean of its divisors is an integer number (338961672).

Almost surely, 2^12112233312 is an apocalyptic number.

12112233312 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 12112233312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16270160256).

12112233312 is an abundant number, since it is smaller than the sum of its proper divisors (20428087200).

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

12112233312 is a wasteful number, since it uses less digits than its factorization.

12112233312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10780 (or 10772 counting only the distinct ones).

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

Adding to 12112233312 its reverse (21333221121), we get a palindrome (33445454433).

The spelling of 12112233312 in words is "twelve billion, one hundred twelve million, two hundred thirty-three thousand, three hundred twelve".