111101112111 has 16 divisors (see below), whose sum is σ = 163201638528. Its totient is φ = 66667332000.

The previous prime is 111101112077. The next prime is 111101112113. The reversal of 111101112111 is 111211101111.

It is not a de Polignac number, because 111101112111 - 2⁶ = 111101112047 is a prime.

It is a super-2 number, since 2×111101112111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101112113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16663501 + ... + 16670166.

It is an arithmetic number, because the mean of its divisors is an integer number (10200102408).

Almost surely, 2^111101112111 is an apocalyptic number.

111101112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111101112111 is a deficient number, since it is larger than the sum of its proper divisors (52100526417).

111101112111 is a wasteful number, since it uses less digits than its factorization.

111101112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333782.

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

Adding to 111101112111 its reverse (111211101111), we get a palindrome (222312213222).

The spelling of 111101112111 in words is "one hundred eleven billion, one hundred one million, one hundred twelve thousand, one hundred eleven".