1111111111099 has 16 divisors (see below), whose sum is σ = 1237443091200. Its totient is φ = 989190412000.

The previous prime is 1111111111093. The next prime is 1111111111139. The reversal of 1111111111099 is 9901111111111.

It is a cyclic number.

It is not a de Polignac number, because 1111111111099 - 2⁷ = 1111111110971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111111111093) 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, 4657717 + ... + 4890454.

It is an arithmetic number, because the mean of its divisors is an integer number (77340193200).

Almost surely, 2^{1111111111099} is an apocalyptic number.

1111111111099 is a deficient number, since it is larger than the sum of its proper divisors (126331980101).

1111111111099 is a wasteful number, since it uses less digits than its factorization.

1111111111099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9548402.

The product of its (nonzero) digits is 81, while the sum is 28.

The spelling of 1111111111099 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, ninety-nine".