21044301424 has 20 divisors (see below), whose sum is σ = 40777085536. Its totient is φ = 10521182592.

The previous prime is 21044301419. The next prime is 21044301431. The reversal of 21044301424 is 42410344012.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 138697 + ... + 247639.

Almost surely, 2^21044301424 is an apocalyptic number.

It is an amenable number.

21044301424 is a deficient number, since it is larger than the sum of its proper divisors (19732784112).

21044301424 is a wasteful number, since it uses less digits than its factorization.

21044301424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121024 (or 121018 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21044301424 its reverse (42410344012), we get a palindrome (63454645436).

The spelling of 21044301424 in words is "twenty-one billion, forty-four million, three hundred one thousand, four hundred twenty-four".