11221189 has 4 divisors (see below), whose sum is σ = 12824224. Its totient is φ = 9618156.

The previous prime is 11221187. The next prime is 11221193. The reversal of 11221189 is 98112211.

11221189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 11221189 - 2¹ = 11221187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221181) 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, 801507 + ... + 801520.

It is an arithmetic number, because the mean of its divisors is an integer number (3206056).

Almost surely, 2^11221189 is an apocalyptic number.

It is an amenable number.

11221189 is a deficient number, since it is larger than the sum of its proper divisors (1603035).

11221189 is an equidigital number, since it uses as much as digits as its factorization.

11221189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603034.

The product of its digits is 288, while the sum is 25.

The square root of 11221189 is about 3349.8043226433. The cubic root of 11221189 is about 223.8787941747.

The spelling of 11221189 in words is "eleven million, two hundred twenty-one thousand, one hundred eighty-nine".