11225218 has 4 divisors (see below), whose sum is σ = 16837830. Its totient is φ = 5612608.

The previous prime is 11225191. The next prime is 11225237. The reversal of 11225218 is 81252211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81252211 = 79 ⋅1028509.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 2948089 = 2877^2 + 1717^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2806303 + ... + 2806306.

Almost surely, 2^11225218 is an apocalyptic number.

11225218 is a deficient number, since it is larger than the sum of its proper divisors (5612612).

11225218 is an equidigital number, since it uses as much as digits as its factorization.

11225218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612611.

The product of its digits is 320, while the sum is 22.

The square root of 11225218 is about 3350.4056470822. The cubic root of 11225218 is about 223.9055857422.

Adding to 11225218 its reverse (81252211), we get a palindrome (92477429).

The spelling of 11225218 in words is "eleven million, two hundred twenty-five thousand, two hundred eighteen".