12712226 has 16 divisors (see below), whose sum is σ = 20421720. Its totient is φ = 5913600.

The previous prime is 12712223. The next prime is 12712229. The reversal of 12712226 is 62221721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12712223) and next prime (12712229).

It can be written as a sum of positive squares in 4 ways, for example, as 7645225 + 5067001 = 2765^2 + 2251^2 .

It is not an unprimeable number, because it can be changed into a prime (12712223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926 + ... + 5126.

Almost surely, 2^12712226 is an apocalyptic number.

12712226 is a deficient number, since it is larger than the sum of its proper divisors (7709494).

12712226 is a wasteful number, since it uses less digits than its factorization.

12712226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its digits is 672, while the sum is 23.

The square root of 12712226 is about 3565.4208727722. The cubic root of 12712226 is about 233.3854989942.

Adding to 12712226 its reverse (62221721), we get a palindrome (74933947).

The spelling of 12712226 in words is "twelve million, seven hundred twelve thousand, two hundred twenty-six".