11220218 has 8 divisors (see below), whose sum is σ = 17106420. Its totient is φ = 5518080.

The previous prime is 11220211. The next prime is 11220227. The reversal of 11220218 is 81202211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10647169 + 573049 = 3263^2 + 757^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11220196 and 11220205.

It is not an unprimeable number, because it can be changed into a prime (11220211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45863 + ... + 46106.

Almost surely, 2^11220218 is an apocalyptic number.

11220218 is a deficient number, since it is larger than the sum of its proper divisors (5886202).

11220218 is an equidigital number, since it uses as much as digits as its factorization.

11220218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92032.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 11220218 is about 3349.6593856689. The cubic root of 11220218 is about 223.8723363748.

Adding to 11220218 its reverse (81202211), we get a palindrome (92422429).

The spelling of 11220218 in words is "eleven million, two hundred twenty thousand, two hundred eighteen".