12226304645 has 4 divisors (see below), whose sum is σ = 14671565580. Its totient is φ = 9781043712.

The previous prime is 12226304639. The next prime is 12226304663. The reversal of 12226304645 is 54640362221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9139168801 + 3087135844 = 95599^2 + 55562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12226304645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222630460 + ... + 1222630469.

It is an arithmetic number, because the mean of its divisors is an integer number (3667891395).

Almost surely, 2^12226304645 is an apocalyptic number.

It is an amenable number.

12226304645 is a deficient number, since it is larger than the sum of its proper divisors (2445260935).

12226304645 is an equidigital number, since it uses as much as digits as its factorization.

12226304645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445260934.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 12226304645 its reverse (54640362221), we get a palindrome (66866666866).

The spelling of 12226304645 in words is "twelve billion, two hundred twenty-six million, three hundred four thousand, six hundred forty-five".