21044104441 has 8 divisors (see below), whose sum is σ = 21750793344. Its totient is φ = 20348204880.

The previous prime is 21044104439. The next prime is 21044104463. The reversal of 21044104441 is 14440144012.

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 21044104441 - 2¹ = 21044104439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21044144441) 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 7 ways as a sum of consecutive naturals, for example, 2693370 + ... + 2701171.

It is an arithmetic number, because the mean of its divisors is an integer number (2718849168).

Almost surely, 2^21044104441 is an apocalyptic number.

It is an amenable number.

21044104441 is a deficient number, since it is larger than the sum of its proper divisors (706688903).

21044104441 is an equidigital number, since it uses as much as digits as its factorization.

21044104441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5394671.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 21044104441 its reverse (14440144012), we get a palindrome (35484248453).

The spelling of 21044104441 in words is "twenty-one billion, forty-four million, one hundred four thousand, four hundred forty-one".