111101111109 has 64 divisors (see below), whose sum is σ = 175724640000. Its totient is φ = 69132718080.

The previous prime is 111101111071. The next prime is 111101111123. The reversal of 111101111109 is 901111101111.

It is not a de Polignac number, because 111101111109 - 2²⁰ = 111100062533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111101111091 and 111101111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101131109) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 74613837 + ... + 74615325.

It is an arithmetic number, because the mean of its divisors is an integer number (2745697500).

Almost surely, 2^111101111109 is an apocalyptic number.

It is an amenable number.

111101111109 is a deficient number, since it is larger than the sum of its proper divisors (64623528891).

111101111109 is a wasteful number, since it uses less digits than its factorization.

111101111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 18.

The spelling of 111101111109 in words is "one hundred eleven billion, one hundred one million, one hundred eleven thousand, one hundred nine".