12226645 has 8 divisors (see below), whose sum is σ = 14698656. Its totient is φ = 9763536.

The previous prime is 12226637. The next prime is 12226649. The reversal of 12226645 is 54662221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12226645 - 2³ = 12226637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226649) 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, 1314 + ... + 5116.

It is an arithmetic number, because the mean of its divisors is an integer number (1837332).

Almost surely, 2^12226645 is an apocalyptic number.

It is an amenable number.

12226645 is a deficient number, since it is larger than the sum of its proper divisors (2472011).

12226645 is an equidigital number, since it uses as much as digits as its factorization.

12226645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451.

The product of its digits is 5760, while the sum is 28.

The square root of 12226645 is about 3496.6619796600. The cubic root of 12226645 is about 230.3752224372.

Adding to 12226645 its reverse (54662221), we get a palindrome (66888866).

The spelling of 12226645 in words is "twelve million, two hundred twenty-six thousand, six hundred forty-five".