21301043024 has 20 divisors (see below), whose sum is σ = 41793188160. Its totient is φ = 10515704160.

The previous prime is 21301043009. The next prime is 21301043033. The reversal of 21301043024 is 42034010312.

It is a junction number, because it is equal to n+sod(n) for n = 21301042987 and 21301043005.

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, 8424782 + ... + 8427309.

It is an arithmetic number, because the mean of its divisors is an integer number (2089659408).

Almost surely, 2^21301043024 is an apocalyptic number.

It is an amenable number.

21301043024 is a deficient number, since it is larger than the sum of its proper divisors (20492145136).

21301043024 is a wasteful number, since it uses less digits than its factorization.

21301043024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16852178 (or 16852172 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21301043024 its reverse (42034010312), we get a palindrome (63335053336).

The spelling of 21301043024 in words is "twenty-one billion, three hundred one million, forty-three thousand, twenty-four".