111111101121112 has 32 divisors (see below), whose sum is σ = 208764360000000. Its totient is φ = 55440712610208.

The previous prime is 111111101121047. The next prime is 111111101121179. The reversal of 111111101121112 is 211121101111111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553889 + ... + 14987887.

It is an arithmetic number, because the mean of its divisors is an integer number (6523886250000).

Almost surely, 2^{111111101121112} is an apocalyptic number.

It is an amenable number.

111111101121112 is a deficient number, since it is larger than the sum of its proper divisors (97653258878888).

111111101121112 is a wasteful number, since it uses less digits than its factorization.

111111101121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436143 (or 13436139 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 16.

Adding to 111111101121112 its reverse (211121101111111), we get a palindrome (322232202232223).

The spelling of 111111101121112 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred one million, one hundred twenty-one thousand, one hundred twelve".