11222805 has 32 divisors (see below), whose sum is σ = 20746368. Its totient is φ = 5120000.

The previous prime is 11222791. The next prime is 11222843. The reversal of 11222805 is 50822211.

It is a happy number.

It is not a de Polignac number, because 11222805 - 2⁴ = 11222789 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805 + ... + 4805.

It is an arithmetic number, because the mean of its divisors is an integer number (648324).

Almost surely, 2^11222805 is an apocalyptic number.

11222805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11222805 is a deficient number, since it is larger than the sum of its proper divisors (9523563).

11222805 is a wasteful number, since it uses less digits than its factorization.

11222805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 11222805 is about 3350.0455220788. The cubic root of 11222805 is about 223.8895408304.

The spelling of 11222805 in words is "eleven million, two hundred twenty-two thousand, eight hundred five".