12280135129 has 2 divisors, whose sum is σ = 12280135130. Its totient is φ = 12280135128.

The previous prime is 12280135093. The next prime is 12280135141. The reversal of 12280135129 is 92153108221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12265119504 + 15015625 = 110748^2 + 3875^2 .

It is an emirp because it is prime and its reverse (92153108221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12280135129 - 2¹⁵ = 12280102361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12280135094 and 12280135103.

It is not a weakly prime, because it can be changed into another prime (12280135529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140067564 + 6140067565.

It is an arithmetic number, because the mean of its divisors is an integer number (6140067565).

Almost surely, 2^12280135129 is an apocalyptic number.

It is an amenable number.

12280135129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280135129 is an equidigital number, since it uses as much as digits as its factorization.

12280135129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 12280135129 in words is "twelve billion, two hundred eighty million, one hundred thirty-five thousand, one hundred twenty-nine".