11220589 has 4 divisors (see below), whose sum is σ = 11228224. Its totient is φ = 11212956.

The previous prime is 11220553. The next prime is 11220623. The reversal of 11220589 is 98502211.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11220589 - 2¹⁷ = 11089517 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220689) 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, 837 + ... + 4810.

It is an arithmetic number, because the mean of its divisors is an integer number (2807056).

Almost surely, 2^11220589 is an apocalyptic number.

It is an amenable number.

11220589 is a deficient number, since it is larger than the sum of its proper divisors (7635).

11220589 is an equidigital number, since it uses as much as digits as its factorization.

11220589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 11220589 is about 3349.7147639762. The cubic root of 11220589 is about 223.8748038171.

The spelling of 11220589 in words is "eleven million, two hundred twenty thousand, five hundred eighty-nine".