12134420421 has 8 divisors (see below), whose sum is σ = 16336307520. Its totient is φ = 8011073472.

The previous prime is 12134420377. The next prime is 12134420443. The reversal of 12134420421 is 12402443121.

12134420421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12134420421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12134420391 and 12134420400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12134420491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19634676 + ... + 19635293.

It is an arithmetic number, because the mean of its divisors is an integer number (2042038440).

Almost surely, 2^12134420421 is an apocalyptic number.

It is an amenable number.

12134420421 is a deficient number, since it is larger than the sum of its proper divisors (4201887099).

12134420421 is a wasteful number, since it uses less digits than its factorization.

12134420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39270075.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12134420421 its reverse (12402443121), we get a palindrome (24536863542).

The spelling of 12134420421 in words is "twelve billion, one hundred thirty-four million, four hundred twenty thousand, four hundred twenty-one".