12112222222212 has 48 divisors (see below), whose sum is σ = 32300782631040. Its totient is φ = 3460471702272.

The previous prime is 12112222222211. The next prime is 12112222222237. The reversal of 12112222222212 is 21222222221121.

It is a happy number.

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 (12112222222211) 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, 1603153 + ... + 5176344.

It is an arithmetic number, because the mean of its divisors is an integer number (672932971480).

Almost surely, 2^{12112222222212} is an apocalyptic number.

12112222222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12112222222212 is an abundant number, since it is smaller than the sum of its proper divisors (20188560408828).

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

12112222222212 is a wasteful number, since it uses less digits than its factorization.

12112222222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6800780 (or 6800778 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

Adding to 12112222222212 its reverse (21222222221121), we get a palindrome (33334444443333).

The spelling of 12112222222212 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".