11111111099 has 16 divisors (see below), whose sum is σ = 12763109760. Its totient is φ = 9566424000.

The previous prime is 11111111059. The next prime is 11111111113. The reversal of 11111111099 is 99011111111.

11111111099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111111099 - 2¹² = 11111107003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111111059) 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 15 ways as a sum of consecutive naturals, for example, 922184 + ... + 934154.

It is an arithmetic number, because the mean of its divisors is an integer number (797694360).

Almost surely, 2^11111111099 is an apocalyptic number.

11111111099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11111111099 is a deficient number, since it is larger than the sum of its proper divisors (1651998661).

11111111099 is a wasteful number, since it uses less digits than its factorization.

11111111099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16442.

The product of its (nonzero) digits is 81, while the sum is 26.

The spelling of 11111111099 in words is "eleven billion, one hundred eleven million, one hundred eleven thousand, ninety-nine".