111100111109 has 8 divisors (see below), whose sum is σ = 119867438712. Its totient is φ = 102364378560.

The previous prime is 111100111103. The next prime is 111100111123. The reversal of 111100111109 is 901111001111.

It can be written as a sum of positive squares in 4 ways, for example, as 15068299009 + 96031812100 = 122753^2 + 309890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111100111109 - 2⁸ = 111100110853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7891454 + ... + 7905519.

It is an arithmetic number, because the mean of its divisors is an integer number (14983429839).

Almost surely, 2^111100111109 is an apocalyptic number.

It is an amenable number.

111100111109 is a deficient number, since it is larger than the sum of its proper divisors (8767327603).

111100111109 is a wasteful number, since it uses less digits than its factorization.

111100111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15797527.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 111100111109 in words is "one hundred eleven billion, one hundred million, one hundred eleven thousand, one hundred nine".