11220318 has 12 divisors (see below), whose sum is σ = 24310728. Its totient is φ = 3740100.

The previous prime is 11220311. The next prime is 11220331. The reversal of 11220318 is 81302211.

It is a super-2 number, since 2×11220318² = 251791072042248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 623351 = 11220318 / (1 + 1 + 2 + 2 + 0 + 3 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 11220318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311658 + ... + 311693.

It is an arithmetic number, because the mean of its divisors is an integer number (2025894).

Almost surely, 2^11220318 is an apocalyptic number.

11220318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11220318 is an abundant number, since it is smaller than the sum of its proper divisors (13090410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11220318 is a wasteful number, since it uses less digits than its factorization.

11220318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623359 (or 623356 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 11220318 is about 3349.6743125265. The cubic root of 11220318 is about 223.8730014589.

Adding to 11220318 its reverse (81302211), we get a palindrome (92522529).

The spelling of 11220318 in words is "eleven million, two hundred twenty thousand, three hundred eighteen".