112011209 has 4 divisors (see below), whose sum is σ = 112037316. Its totient is φ = 111985104.

The previous prime is 112011191. The next prime is 112011227. The reversal of 112011209 is 902110211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 902110211 = 10433 ⋅86467.

It is an interprime number because it is at equal distance from previous prime (112011191) and next prime (112011227).

It can be written as a sum of positive squares in 2 ways, for example, as 65157184 + 46854025 = 8072^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 112011209 - 2⁸ = 112010953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112011269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4934 + ... + 15759.

It is an arithmetic number, because the mean of its divisors is an integer number (28009329).

Almost surely, 2^112011209 is an apocalyptic number.

It is an amenable number.

112011209 is a deficient number, since it is larger than the sum of its proper divisors (26107).

112011209 is an equidigital number, since it uses as much as digits as its factorization.

112011209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26106.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 112011209 is about 10583.5348064812. The cubic root of 112011209 is about 482.0445328252.

The spelling of 112011209 in words is "one hundred twelve million, eleven thousand, two hundred nine".