111112221112 has 8 divisors (see below), whose sum is σ = 208335414600. Its totient is φ = 55556110552.

The previous prime is 111112221109. The next prime is 111112221127. The reversal of 111112221112 is 211122211111.

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 6944513812 + ... + 6944513827.

It is an arithmetic number, because the mean of its divisors is an integer number (26041926825).

Almost surely, 2^111112221112 is an apocalyptic number.

It is an amenable number.

111112221112 is a deficient number, since it is larger than the sum of its proper divisors (97223193488).

111112221112 is a wasteful number, since it uses less digits than its factorization.

111112221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889027645 (or 13889027641 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

Adding to 111112221112 its reverse (211122211111), we get a palindrome (322234432223).

The spelling of 111112221112 in words is "one hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twelve".