12444030021 has 16 divisors (see below), whose sum is σ = 16984249920. Its totient is φ = 8100059520.

The previous prime is 12444029989. The next prime is 12444030077. The reversal of 12444030021 is 12003044421.

12444030021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12444030021 - 2⁵ = 12444029989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12444030021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444030091) 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 15 ways as a sum of consecutive naturals, for example, 358681 + ... + 391841.

It is an arithmetic number, because the mean of its divisors is an integer number (1061515620).

Almost surely, 2^12444030021 is an apocalyptic number.

It is an amenable number.

12444030021 is a deficient number, since it is larger than the sum of its proper divisors (4540219899).

12444030021 is a wasteful number, since it uses less digits than its factorization.

12444030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36116.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12444030021 its reverse (12003044421), we get a palindrome (24447074442).

The spelling of 12444030021 in words is "twelve billion, four hundred forty-four million, thirty thousand, twenty-one".