111222212212112 has 40 divisors (see below), whose sum is σ = 217508742585216. Its totient is φ = 55090932181376.

The previous prime is 111222212212091. The next prime is 111222212212123. The reversal of 111222212212112 is 211212212222111.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345880718 + ... + 346202130.

Almost surely, 2^{111222212212112} is an apocalyptic number.

It is an amenable number.

111222212212112 is a deficient number, since it is larger than the sum of its proper divisors (106286530373104).

111222212212112 is a wasteful number, since it uses less digits than its factorization.

111222212212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523655 (or 523649 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 111222212212112 its reverse (211212212222111), we get a palindrome (322434424434223).

Subtracting 111222212212112 from its reverse (211212212222111), we obtain a palindrome (99990000009999).

The spelling of 111222212212112 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twelve thousand, one hundred twelve".