12222266 has 12 divisors (see below), whose sum is σ = 21326778. Its totient is φ = 5238072.

The previous prime is 12222257. The next prime is 12222271. The reversal of 12222266 is 66222221.

It can be written as a sum of positive squares in only one way, i.e., 7958041 + 4264225 = 2821^2 + 2065^2 .

It is a Curzon number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62261 + ... + 62456.

Almost surely, 2^12222266 is an apocalyptic number.

12222266 is a deficient number, since it is larger than the sum of its proper divisors (9104512).

12222266 is a wasteful number, since it uses less digits than its factorization.

12222266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124733 (or 124726 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 12222266 is about 3496.0357549659. The cubic root of 12222266 is about 230.3477160209.

Adding to 12222266 its reverse (66222221), we get a palindrome (78444487).

The spelling of 12222266 in words is "twelve million, two hundred twenty-two thousand, two hundred sixty-six".