11221187 has 2 divisors, whose sum is σ = 11221188. Its totient is φ = 11221186.

The previous prime is 11221181. The next prime is 11221193. The reversal of 11221187 is 78112211.

11221187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (11221181) and next prime (11221193).

It is a cyclic number.

It is not a de Polignac number, because 11221187 - 2⁶ = 11221123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610593 + 5610594.

It is an arithmetic number, because the mean of its divisors is an integer number (5610594).

Almost surely, 2^11221187 is an apocalyptic number.

11221187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221187 is an equidigital number, since it uses as much as digits as its factorization.

11221187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 23.

The square root of 11221187 is about 3349.8040241184. The cubic root of 11221187 is about 223.8787808737.

Adding to 11221187 its reverse (78112211), we get a palindrome (89333398).

The spelling of 11221187 in words is "eleven million, two hundred twenty-one thousand, one hundred eighty-seven".