111112101111 has 16 divisors (see below), whose sum is σ = 161641035648. Its totient is φ = 67330903200.

The previous prime is 111112101097. The next prime is 111112101143. The reversal of 111112101111 is 111101211111.

It is not a de Polignac number, because 111112101111 - 2⁶ = 111112101047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112101151) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9705 + ... + 471506.

It is an arithmetic number, because the mean of its divisors is an integer number (10102564728).

Almost surely, 2^111112101111 is an apocalyptic number.

111112101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111112101111 is a deficient number, since it is larger than the sum of its proper divisors (50528934537).

111112101111 is a wasteful number, since it uses less digits than its factorization.

111112101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488222.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 111112101111 its reverse (111101211111), we get a palindrome (222213312222).

Subtracting from 111112101111 its reverse (111101211111), we obtain a square (10890000 = 3300²).

The spelling of 111112101111 in words is "one hundred eleven billion, one hundred twelve million, one hundred one thousand, one hundred eleven".