11156201 has 4 divisors (see below), whose sum is σ = 12749952. Its totient is φ = 9562452.

The previous prime is 11156179. The next prime is 11156207. The reversal of 11156201 is 10265111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10265111 = 19 ⋅540269.

It is a cyclic number.

It is not a de Polignac number, because 11156201 - 2⁶ = 11156137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11156201.

It is not an unprimeable number, because it can be changed into a prime (11156207) 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, 796865 + ... + 796878.

It is an arithmetic number, because the mean of its divisors is an integer number (3187488).

Almost surely, 2^11156201 is an apocalyptic number.

It is an amenable number.

11156201 is a deficient number, since it is larger than the sum of its proper divisors (1593751).

11156201 is an equidigital number, since it uses as much as digits as its factorization.

11156201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593750.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 11156201 is about 3340.0899688481. The cubic root of 11156201 is about 223.4457558786.

The spelling of 11156201 in words is "eleven million, one hundred fifty-six thousand, two hundred one".