11199156 has 12 divisors (see below), whose sum is σ = 26131392. Its totient is φ = 3733048.

The previous prime is 11199143. The next prime is 11199157. The reversal of 11199156 is 65199111.

11199156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×11199156² = 250842190224672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11199157) 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, 466620 + ... + 466643.

It is an arithmetic number, because the mean of its divisors is an integer number (2177616).

Almost surely, 2^11199156 is an apocalyptic number.

It is an amenable number.

11199156 is an abundant number, since it is smaller than the sum of its proper divisors (14932236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11199156 is a wasteful number, since it uses less digits than its factorization.

11199156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933270 (or 933268 counting only the distinct ones).

The product of its digits is 2430, while the sum is 33.

The square root of 11199156 is about 3346.5140071424. The cubic root of 11199156 is about 223.7321681949.

The spelling of 11199156 in words is "eleven million, one hundred ninety-nine thousand, one hundred fifty-six".