12421111244423 has 8 divisors (see below), whose sum is σ = 14195578564992. Its totient is φ = 10646649638136.

The previous prime is 12421111244383. The next prime is 12421111244441. The reversal of 12421111244423 is 32444211112421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12421111244423 - 2⁸ = 12421111244167 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 12421111244423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421111244473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5414936 + ... + 7359602.

It is an arithmetic number, because the mean of its divisors is an integer number (1774447320624).

Almost surely, 2^{12421111244423} is an apocalyptic number.

12421111244423 is a deficient number, since it is larger than the sum of its proper divisors (1774467320569).

12421111244423 is an equidigital number, since it uses as much as digits as its factorization.

12421111244423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857141.

The product of its digits is 12288, while the sum is 32.

Adding to 12421111244423 its reverse (32444211112421), we get a palindrome (44865322356844).

The spelling of 12421111244423 in words is "twelve trillion, four hundred twenty-one billion, one hundred eleven million, two hundred forty-four thousand, four hundred twenty-three".