12129280303 has 4 divisors (see below), whose sum is σ = 13862034640. Its totient is φ = 10396525968.

The previous prime is 12129280283. The next prime is 12129280327. The reversal of 12129280303 is 30308292121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12129280303 - 2²⁹ = 11592409391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129280333) 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, 866377158 + ... + 866377171.

It is an arithmetic number, because the mean of its divisors is an integer number (3465508660).

Almost surely, 2^12129280303 is an apocalyptic number.

12129280303 is a deficient number, since it is larger than the sum of its proper divisors (1732754337).

12129280303 is an equidigital number, since it uses as much as digits as its factorization.

12129280303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732754336.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 12129280303 in words is "twelve billion, one hundred twenty-nine million, two hundred eighty thousand, three hundred three".