111365899 has 2 divisors, whose sum is σ = 111365900. Its totient is φ = 111365898.

The previous prime is 111365803. The next prime is 111365923. The reversal of 111365899 is 998563111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111365899 is a prime.

It is not a weakly prime, because it can be changed into another prime (111365999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55682949 + 55682950.

It is an arithmetic number, because the mean of its divisors is an integer number (55682950).

Almost surely, 2^111365899 is an apocalyptic number.

111365899 is a deficient number, since it is larger than the sum of its proper divisors (1).

111365899 is an equidigital number, since it uses as much as digits as its factorization.

111365899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The square root of 111365899 is about 10553.0042641894. The cubic root of 111365899 is about 481.1170439707.

The spelling of 111365899 in words is "one hundred eleven million, three hundred sixty-five thousand, eight hundred ninety-nine".