12130430261 has 2 divisors, whose sum is σ = 12130430262. Its totient is φ = 12130430260.

The previous prime is 12130430239. The next prime is 12130430297. The reversal of 12130430261 is 16203403121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6761937361 + 5368492900 = 82231^2 + 73270^2 .

It is a cyclic number.

It is not a de Polignac number, because 12130430261 - 2⁶ = 12130430197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12130430761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065215130 + 6065215131.

It is an arithmetic number, because the mean of its divisors is an integer number (6065215131).

Almost surely, 2^12130430261 is an apocalyptic number.

It is an amenable number.

12130430261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12130430261 is an equidigital number, since it uses as much as digits as its factorization.

12130430261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12130430261 its reverse (16203403121), we get a palindrome (28333833382).

The spelling of 12130430261 in words is "twelve billion, one hundred thirty million, four hundred thirty thousand, two hundred sixty-one".