111111011109 has 12 divisors (see below), whose sum is σ = 183421351776. Its totient is φ = 63492006312.

The previous prime is 111111011087. The next prime is 111111011111. The reversal of 111111011109 is 901110111111.

It is not a de Polignac number, because 111111011109 - 2⁷ = 111111010981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111111011091 and 111111011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111011159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881833359 + ... + 881833484.

It is an arithmetic number, because the mean of its divisors is an integer number (15285112648).

Almost surely, 2^111111011109 is an apocalyptic number.

It is an amenable number.

111111011109 is a deficient number, since it is larger than the sum of its proper divisors (72310340667).

111111011109 is a wasteful number, since it uses less digits than its factorization.

111111011109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763666856 (or 1763666853 counting only the distinct ones).

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

The spelling of 111111011109 in words is "one hundred eleven billion, one hundred eleven million, eleven thousand, one hundred nine".