11199 has 4 divisors (see below), whose sum is σ = 14936. Its totient is φ = 7464.

The previous prime is 11197. The next prime is 11213. The reversal of 11199 is 99111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99111 = 3 ⋅33037.

It is not a de Polignac number, because 11199 - 2¹ = 11197 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 8, base 10 and base 16.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197) 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, 1864 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (3734).

11199 is a deficient number, since it is larger than the sum of its proper divisors (3737).

11199 is an equidigital number, since it uses as much as digits as its factorization.

11199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736.

The product of its digits is 81, while the sum is 21.

The square root of 11199 is about 105.8253277812. The cubic root of 11199 is about 22.3731129355.

It can be divided in two parts, 1119 and 9, that added together give a triangular number (1128 = T₄₇).

The spelling of 11199 in words is "eleven thousand, one hundred ninety-nine".