12134421320403 has 4 divisors (see below), whose sum is σ = 16179228427208. Its totient is φ = 8089614213600.

The previous prime is 12134421320353. The next prime is 12134421320453. The reversal of 12134421320403 is 30402312443121.

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

It is an interprime number because it is at equal distance from previous prime (12134421320353) and next prime (12134421320453).

It is not a de Polignac number, because 12134421320403 - 2¹⁰ = 12134421319379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12134421320453) 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, 2022403553398 + ... + 2022403553403.

It is an arithmetic number, because the mean of its divisors is an integer number (4044807106802).

Almost surely, 2^{12134421320403} is an apocalyptic number.

12134421320403 is a deficient number, since it is larger than the sum of its proper divisors (4044807106805).

12134421320403 is an equidigital number, since it uses as much as digits as its factorization.

12134421320403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044807106804.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 12134421320403 its reverse (30402312443121), we get a palindrome (42536733763524).

The spelling of 12134421320403 in words is "twelve trillion, one hundred thirty-four billion, four hundred twenty-one million, three hundred twenty thousand, four hundred three".