111100009 has 4 divisors (see below), whose sum is σ = 112983120. Its totient is φ = 109216900.

The previous prime is 111099997. The next prime is 111100027. The reversal of 111100009 is 900001111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111100009 - 2⁹ = 111099497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941467 + ... + 941584.

It is an arithmetic number, because the mean of its divisors is an integer number (28245780).

Almost surely, 2^111100009 is an apocalyptic number.

It is an amenable number.

111100009 is a deficient number, since it is larger than the sum of its proper divisors (1883111).

111100009 is an equidigital number, since it uses as much as digits as its factorization.

111100009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883110.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 111100009 is about 10540.3989013699. The cubic root of 111100009 is about 480.7338442208.

The spelling of 111100009 in words is "one hundred eleven million, one hundred thousand, nine".