11112009 has 4 divisors (see below), whose sum is σ = 14816016. Its totient is φ = 7408004.

The previous prime is 11112007. The next prime is 11112011. The reversal of 11112009 is 90021111.

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 an interprime number because it is at equal distance from previous prime (11112007) and next prime (11112011).

It is a cyclic number.

It is not a de Polignac number, because 11112009 - 2¹ = 11112007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11112007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851999 + ... + 1852004.

It is an arithmetic number, because the mean of its divisors is an integer number (3704004).

Almost surely, 2^11112009 is an apocalyptic number.

It is an amenable number.

11112009 is a deficient number, since it is larger than the sum of its proper divisors (3704007).

11112009 is an equidigital number, since it uses as much as digits as its factorization.

11112009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704006.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 11112009 is about 3333.4680139458. The cubic root of 11112009 is about 223.1503272962.

The spelling of 11112009 in words is "eleven million, one hundred twelve thousand, nine".