12320211129 has 4 divisors (see below), whose sum is σ = 16426948176. Its totient is φ = 8213474084.

The previous prime is 12320211047. The next prime is 12320211179. The reversal of 12320211129 is 92111202321.

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 a cyclic number.

It is not a de Polignac number, because 12320211129 - 2⁸ = 12320210873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12320211099 and 12320211108.

It is not an unprimeable number, because it can be changed into a prime (12320211179) 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, 2053368519 + ... + 2053368524.

It is an arithmetic number, because the mean of its divisors is an integer number (4106737044).

Almost surely, 2^12320211129 is an apocalyptic number.

It is an amenable number.

12320211129 is a deficient number, since it is larger than the sum of its proper divisors (4106737047).

12320211129 is an equidigital number, since it uses as much as digits as its factorization.

12320211129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106737046.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 12320211129 in words is "twelve billion, three hundred twenty million, two hundred eleven thousand, one hundred twenty-nine".