222121111112 has 16 divisors (see below), whose sum is σ = 418569936000. Its totient is φ = 110502461520.

The previous prime is 222121111109. The next prime is 222121111153. The reversal of 222121111112 is 211111121222.

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 3 ways as a sum of consecutive naturals, for example, 69760064 + ... + 69763247.

It is an arithmetic number, because the mean of its divisors is an integer number (26160621000).

Almost surely, 2^222121111112 is an apocalyptic number.

It is an amenable number.

222121111112 is a deficient number, since it is larger than the sum of its proper divisors (196448824888).

222121111112 is a wasteful number, since it uses less digits than its factorization.

222121111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139523516 (or 139523512 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 222121111112 its reverse (211111121222), we get a palindrome (433232232334).

The spelling of 222121111112 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twelve".