12424421444 has 12 divisors (see below), whose sum is σ = 21743652924. Its totient is φ = 6211949184.

The previous prime is 12424421441. The next prime is 12424421447. The reversal of 12424421444 is 44412442421.

It is an interprime number because it is at equal distance from previous prime (12424421441) and next prime (12424421447).

It can be written as a sum of positive squares in 2 ways, for example, as 8469520900 + 3954900544 = 92030^2 + 62888^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12424421444.

It is not an unprimeable number, because it can be changed into a prime (12424421441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74984 + ... + 174560.

It is an arithmetic number, because the mean of its divisors is an integer number (1811971077).

Almost surely, 2^12424421444 is an apocalyptic number.

It is an amenable number.

12424421444 is a deficient number, since it is larger than the sum of its proper divisors (9319231480).

12424421444 is a wasteful number, since it uses less digits than its factorization.

12424421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130774 (or 130772 counting only the distinct ones).

The product of its digits is 32768, while the sum is 32.

Adding to 12424421444 its reverse (44412442421), we get a palindrome (56836863865).

The spelling of 12424421444 in words is "twelve billion, four hundred twenty-four million, four hundred twenty-one thousand, four hundred forty-four".