11222218 has 16 divisors (see below), whose sum is σ = 19381824. Its totient is φ = 4773600.

The previous prime is 11222209. The next prime is 11222219. The reversal of 11222218 is 81222211.

It is a junction number, because it is equal to n+sod(n) for n = 11222195 and 11222204.

It is not an unprimeable number, because it can be changed into a prime (11222219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1008 + ... + 4843.

It is an arithmetic number, because the mean of its divisors is an integer number (1211364).

Almost surely, 2^11222218 is an apocalyptic number.

11222218 is a deficient number, since it is larger than the sum of its proper divisors (8159606).

11222218 is a wasteful number, since it uses less digits than its factorization.

11222218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5997.

The product of its digits is 128, while the sum is 19.

The square root of 11222218 is about 3349.9579101834. The cubic root of 11222218 is about 223.8856373068.

Adding to 11222218 its reverse (81222211), we get a palindrome (92444429).

The spelling of 11222218 in words is "eleven million, two hundred twenty-two thousand, two hundred eighteen".