12244040321 has 4 divisors (see below), whose sum is σ = 12245999700. Its totient is φ = 12242080944.

The previous prime is 12244040299. The next prime is 12244040429. The reversal of 12244040321 is 12304044221.

12244040321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 6684697600 + 5559342721 = 81760^2 + 74561^2 .

It is a cyclic number.

It is not a de Polignac number, because 12244040321 - 2¹⁸ = 12243778177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12244030321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970286 + ... + 982823.

It is an arithmetic number, because the mean of its divisors is an integer number (3061499925).

Almost surely, 2^12244040321 is an apocalyptic number.

It is an amenable number.

12244040321 is a deficient number, since it is larger than the sum of its proper divisors (1959379).

12244040321 is an equidigital number, since it uses as much as digits as its factorization.

12244040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959378.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12244040321 its reverse (12304044221), we get a palindrome (24548084542).

The spelling of 12244040321 in words is "twelve billion, two hundred forty-four million, forty thousand, three hundred twenty-one".