111611099 has 2 divisors, whose sum is σ = 111611100. Its totient is φ = 111611098.

The previous prime is 111611081. The next prime is 111611113. The reversal of 111611099 is 990116111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111611099 is a prime.

It is not a weakly prime, because it can be changed into another prime (111611009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55805549 + 55805550.

It is an arithmetic number, because the mean of its divisors is an integer number (55805550).

Almost surely, 2^111611099 is an apocalyptic number.

111611099 is a deficient number, since it is larger than the sum of its proper divisors (1).

111611099 is an equidigital number, since it uses as much as digits as its factorization.

111611099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 29.

The square root of 111611099 is about 10564.6154213014. The cubic root of 111611099 is about 481.4698851482.

The spelling of 111611099 in words is "one hundred eleven million, six hundred eleven thousand, ninety-nine".