11218166 has 4 divisors (see below), whose sum is σ = 16827252. Its totient is φ = 5609082.

The previous prime is 11218159. The next prime is 11218169. The reversal of 11218166 is 66181211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66181211 = 1033 ⋅64067.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11218169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2804540 + ... + 2804543.

It is an arithmetic number, because the mean of its divisors is an integer number (4206813).

Almost surely, 2^11218166 is an apocalyptic number.

11218166 is a deficient number, since it is larger than the sum of its proper divisors (5609086).

11218166 is an equidigital number, since it uses as much as digits as its factorization.

11218166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609085.

The product of its digits is 576, while the sum is 26.

The square root of 11218166 is about 3349.3530718633. The cubic root of 11218166 is about 223.8586879756.

Adding to 11218166 its reverse (66181211), we get a palindrome (77399377).

The spelling of 11218166 in words is "eleven million, two hundred eighteen thousand, one hundred sixty-six".