12432132123121 has 4 divisors (see below), whose sum is σ = 12432140392000. Its totient is φ = 12432123854244.

The previous prime is 12432132123091. The next prime is 12432132123179. The reversal of 12432132123121 is 12132123123421.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12432132123121 - 2⁹ = 12432132122609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12432132123121.

It is not an unprimeable number, because it can be changed into a prime (12432132126121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171341 + ... + 5122138.

It is an arithmetic number, because the mean of its divisors is an integer number (3108035098000).

Almost surely, 2^{12432132123121} is an apocalyptic number.

It is an amenable number.

12432132123121 is a deficient number, since it is larger than the sum of its proper divisors (8268879).

12432132123121 is an equidigital number, since it uses as much as digits as its factorization.

12432132123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268878.

The product of its digits is 3456, while the sum is 28.

Adding to 12432132123121 its reverse (12132123123421), we get a palindrome (24564255246542).

The spelling of 12432132123121 in words is "twelve trillion, four hundred thirty-two billion, one hundred thirty-two million, one hundred twenty-three thousand, one hundred twenty-one".