12112222112112 has 40 divisors (see below), whose sum is σ = 31292135746560. Its totient is φ = 4037119806400.

The previous prime is 12112222112083. The next prime is 12112222112117. The reversal of 12112222112112 is 21121122221121.

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 (12112222112117) 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, 8304912 + ... + 9653807.

It is an arithmetic number, because the mean of its divisors is an integer number (782303393664).

Almost surely, 2^{12112222112112} is an apocalyptic number.

12112222112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12112222112112 is an abundant number, since it is smaller than the sum of its proper divisors (19179913634448).

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

12112222112112 is a wasteful number, since it uses less digits than its factorization.

12112222112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972781 (or 17972775 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 12112222112112 its reverse (21121122221121), we get a palindrome (33233344333233).

The spelling of 12112222112112 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twelve".