12247226 has 4 divisors (see below), whose sum is σ = 18370842. Its totient is φ = 6123612.

The previous prime is 12247211. The next prime is 12247237. The reversal of 12247226 is 62274221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62274221 = 2609 ⋅23869.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 4225 = 3499^2 + 65^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12247195 and 12247204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3061805 + ... + 3061808.

Almost surely, 2^12247226 is an apocalyptic number.

12247226 is a deficient number, since it is larger than the sum of its proper divisors (6123616).

12247226 is an equidigital number, since it uses as much as digits as its factorization.

12247226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123615.

The product of its digits is 2688, while the sum is 26.

The square root of 12247226 is about 3499.6036918485. The cubic root of 12247226 is about 230.5044128128.

The spelling of 12247226 in words is "twelve million, two hundred forty-seven thousand, two hundred twenty-six".