12080520129 has 4 divisors (see below), whose sum is σ = 16107360176. Its totient is φ = 8053680084.

The previous prime is 12080520103. The next prime is 12080520139. The reversal of 12080520129 is 92102508021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12080520129 - 2⁸ = 12080519873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12080520096 and 12080520105.

It is not an unprimeable number, because it can be changed into a prime (12080520139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013420019 + ... + 2013420024.

It is an arithmetic number, because the mean of its divisors is an integer number (4026840044).

Almost surely, 2^12080520129 is an apocalyptic number.

It is an amenable number.

12080520129 is a deficient number, since it is larger than the sum of its proper divisors (4026840047).

12080520129 is an equidigital number, since it uses as much as digits as its factorization.

12080520129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026840046.

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 12080520129 in words is "twelve billion, eighty million, five hundred twenty thousand, one hundred twenty-nine".