111111001112 has 32 divisors (see below), whose sum is σ = 210251008800. Its totient is φ = 55046194944.

The previous prime is 111111001087. The next prime is 111111001121. The reversal of 111111001112 is 211100111111.

It is a happy number.

It is a super-2 number, since 2×111111001112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111111001093 and 111111001102.

It is a congruent number.

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, 285314 + ... + 551022.

It is an arithmetic number, because the mean of its divisors is an integer number (6570344025).

Almost surely, 2^111111001112 is an apocalyptic number.

It is an amenable number.

111111001112 is a deficient number, since it is larger than the sum of its proper divisors (99140007688).

111111001112 is a wasteful number, since it uses less digits than its factorization.

111111001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266195 (or 266191 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111111001112 its reverse (211100111111), we get a palindrome (322211112223).

The spelling of 111111001112 in words is "one hundred eleven billion, one hundred eleven million, one thousand, one hundred twelve".