12222222122112 has 64 divisors (see below), whose sum is σ = 32465648429760. Its totient is φ = 4074027494400.

The previous prime is 12222222122107. The next prime is 12222222122183. The reversal of 12222222122112 is 21122122222221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56240862 + ... + 56457762.

It is an arithmetic number, because the mean of its divisors is an integer number (507275756715).

Almost surely, 2^{12222222122112} is an apocalyptic number.

12222222122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222222122112 is an abundant number, since it is smaller than the sum of its proper divisors (20243426307648).

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

12222222122112 is a wasteful number, since it uses less digits than its factorization.

12222222122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363661 (or 363649 counting only the distinct ones).

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

Adding to 12222222122112 its reverse (21122122222221), we get a palindrome (33344344344333).

The spelling of 12222222122112 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twelve".