11218218 has 32 divisors (see below), whose sum is σ = 25270272. Its totient is φ = 3289200.

The previous prime is 11218217. The next prime is 11218219. The reversal of 11218218 is 81281211.

11218218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11218217) and next prime (11218219).

It is not an unprimeable number, because it can be changed into a prime (11218211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696 + ... + 4787.

It is an arithmetic number, because the mean of its divisors is an integer number (789696).

Almost surely, 2^11218218 is an apocalyptic number.

11218218 is an abundant number, since it is smaller than the sum of its proper divisors (14052054).

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

11218218 is a wasteful number, since it uses less digits than its factorization.

11218218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530.

The product of its digits is 256, while the sum is 24.

The square root of 11218218 is about 3349.3608345474. The cubic root of 11218218 is about 223.8590338620.

Adding to 11218218 its reverse (81281211), we get a palindrome (92499429).

It can be divided in two parts, 1121 and 8218, that added together give a palindrome (9339).

The spelling of 11218218 in words is "eleven million, two hundred eighteen thousand, two hundred eighteen".