111009999999 has 16 divisors (see below), whose sum is σ = 148714710912. Its totient is φ = 73656195168.

The previous prime is 111009999979. The next prime is 111010000009. The reversal of 111009999999 is 999999900111.

It is not a de Polignac number, because 111009999999 - 2⁷ = 111009999871 is a prime.

111009999999 is a modest number, since divided by 999999 gives 111009 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111009999929) 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, 2155797 + ... + 2206689.

It is an arithmetic number, because the mean of its divisors is an integer number (9294669432).

Almost surely, 2^111009999999 is an apocalyptic number.

111009999999 is a deficient number, since it is larger than the sum of its proper divisors (37704710913).

111009999999 is a wasteful number, since it uses less digits than its factorization.

111009999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54326.

The product of its (nonzero) digits is 4782969, while the sum is 66.

The spelling of 111009999999 in words is "one hundred eleven billion, nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".