12132321329 has 4 divisors (see below), whose sum is σ = 12137786100. Its totient is φ = 12126856560.

The previous prime is 12132321317. The next prime is 12132321391. The reversal of 12132321329 is 92312323121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9143184400 + 2989136929 = 95620^2 + 54673^2 .

It is a cyclic number.

It is not a de Polignac number, because 12132321329 - 2²⁰ = 12131272753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132321629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2729054 + ... + 2733495.

It is an arithmetic number, because the mean of its divisors is an integer number (3034446525).

Almost surely, 2^12132321329 is an apocalyptic number.

It is an amenable number.

12132321329 is a deficient number, since it is larger than the sum of its proper divisors (5464771).

12132321329 is an equidigital number, since it uses as much as digits as its factorization.

12132321329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464770.

The product of its digits is 3888, while the sum is 29.

The spelling of 12132321329 in words is "twelve billion, one hundred thirty-two million, three hundred twenty-one thousand, three hundred twenty-nine".