11220418 has 16 divisors (see below), whose sum is σ = 18709056. Its totient is φ = 5003440.

The previous prime is 11220403. The next prime is 11220427. The reversal of 11220418 is 81402211.

It is a happy number.

11220418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11220395 and 11220404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3646 + ... + 5977.

It is an arithmetic number, because the mean of its divisors is an integer number (1169316).

Almost surely, 2^11220418 is an apocalyptic number.

11220418 is a deficient number, since it is larger than the sum of its proper divisors (7488638).

11220418 is a wasteful number, since it uses less digits than its factorization.

11220418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9689.

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

The square root of 11220418 is about 3349.6892393176. The cubic root of 11220418 is about 223.8736665391.

Adding to 11220418 its reverse (81402211), we get a palindrome (92622629).

The spelling of 11220418 in words is "eleven million, two hundred twenty thousand, four hundred eighteen".