21244343044324 has 12 divisors (see below), whose sum is σ = 37184130773244. Its totient is φ = 10620305680544.

The previous prime is 21244343044321. The next prime is 21244343044363. The reversal of 21244343044324 is 42344034344212.

It can be written as a sum of positive squares in 2 ways, for example, as 13188010140900 + 8056332903424 = 3631530^2 + 2838368^2 .

It is a super-2 number, since 2×21244343044324² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21244343044321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466434787 + ... + 466480330.

It is an arithmetic number, because the mean of its divisors is an integer number (3098677564437).

Almost surely, 2^{21244343044324} is an apocalyptic number.

It is an amenable number.

21244343044324 is a deficient number, since it is larger than the sum of its proper divisors (15939787728920).

21244343044324 is a wasteful number, since it uses less digits than its factorization.

21244343044324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932920814 (or 932920812 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 40.

Adding to 21244343044324 its reverse (42344034344212), we get a palindrome (63588377388536).

The spelling of 21244343044324 in words is "twenty-one trillion, two hundred forty-four billion, three hundred forty-three million, forty-four thousand, three hundred twenty-four".