11221239 has 16 divisors (see below), whose sum is σ = 15321600. Its totient is φ = 7303296.

The previous prime is 11221219. The next prime is 11221247. The reversal of 11221239 is 93212211.

It is not a de Polignac number, because 11221239 - 2¹⁹ = 10696951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26572 + ... + 26990.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^11221239 is an apocalyptic number.

11221239 is a deficient number, since it is larger than the sum of its proper divisors (4100361).

11221239 is a wasteful number, since it uses less digits than its factorization.

11221239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its digits is 216, while the sum is 21.

The square root of 11221239 is about 3349.8117857575. The cubic root of 11221239 is about 223.8791266981.

The spelling of 11221239 in words is "eleven million, two hundred twenty-one thousand, two hundred thirty-nine".