12717226 has 4 divisors (see below), whose sum is σ = 19075842. Its totient is φ = 6358612.

The previous prime is 12717209. The next prime is 12717227. The reversal of 12717226 is 62271721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 641601 = 3475^2 + 801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12717194 and 12717203.

It is not an unprimeable number, because it can be changed into a prime (12717227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3179305 + ... + 3179308.

Almost surely, 2^12717226 is an apocalyptic number.

12717226 is a deficient number, since it is larger than the sum of its proper divisors (6358616).

12717226 is an equidigital number, since it uses as much as digits as its factorization.

12717226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358615.

The product of its digits is 2352, while the sum is 28.

The square root of 12717226 is about 3566.1219833315. The cubic root of 12717226 is about 233.4160935451.

Adding to 12717226 its reverse (62271721), we get a palindrome (74988947).

The spelling of 12717226 in words is "twelve million, seven hundred seventeen thousand, two hundred twenty-six".