12421441423 has 2 divisors, whose sum is σ = 12421441424. Its totient is φ = 12421441422.

The previous prime is 12421441411. The next prime is 12421441447. The reversal of 12421441423 is 32414412421.

It is a weak prime.

It is an emirp because it is prime and its reverse (32414412421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421441423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12421441391 and 12421441400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421441723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210720711 + 6210720712.

It is an arithmetic number, because the mean of its divisors is an integer number (6210720712).

Almost surely, 2^12421441423 is an apocalyptic number.

12421441423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421441423 is an equidigital number, since it uses as much as digits as its factorization.

12421441423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 28.

Adding to 12421441423 its reverse (32414412421), we get a palindrome (44835853844).

The spelling of 12421441423 in words is "twelve billion, four hundred twenty-one million, four hundred forty-one thousand, four hundred twenty-three".