11221864 has 16 divisors (see below), whose sum is σ = 21554820. Its totient is φ = 5473920.

The previous prime is 11221843. The next prime is 11221883. The reversal of 11221864 is 46812211.

It can be written as a sum of positive squares in 2 ways, for example, as 11168964 + 52900 = 3342^2 + 230^2 .

It is an unprimeable number.

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, 16779 + ... + 17434.

Almost surely, 2^11221864 is an apocalyptic number.

It is an amenable number.

11221864 is a deficient number, since it is larger than the sum of its proper divisors (10332956).

11221864 is a wasteful number, since it uses less digits than its factorization.

11221864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34260 (or 34256 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 11221864 is about 3349.9050732819. The cubic root of 11221864 is about 223.8832831570.

The spelling of 11221864 in words is "eleven million, two hundred twenty-one thousand, eight hundred sixty-four".