12304012261 has 2 divisors, whose sum is σ = 12304012262. Its totient is φ = 12304012260.

The previous prime is 12304012223. The next prime is 12304012337. The reversal of 12304012261 is 16221040321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8009176036 + 4294836225 = 89494^2 + 65535^2 .

It is an emirp because it is prime and its reverse (16221040321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12304012261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12304012211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6152006130 + 6152006131.

It is an arithmetic number, because the mean of its divisors is an integer number (6152006131).

Almost surely, 2^12304012261 is an apocalyptic number.

It is an amenable number.

12304012261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12304012261 is an equidigital number, since it uses as much as digits as its factorization.

12304012261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12304012261 its reverse (16221040321), we get a palindrome (28525052582).

The spelling of 12304012261 in words is "twelve billion, three hundred four million, twelve thousand, two hundred sixty-one".