21302401024 has 24 divisors (see below), whose sum is σ = 42594404580. Its totient is φ = 10651199488.

The previous prime is 21302401013. The next prime is 21302401063. The reversal of 21302401024 is 42010420312.

It is a junction number, because it is equal to n+sod(n) for n = 21302400992 and 21302401010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5198734 + ... + 5202829.

Almost surely, 2^21302401024 is an apocalyptic number.

It is an amenable number.

21302401024 is a deficient number, since it is larger than the sum of its proper divisors (21292003556).

21302401024 is an equidigital number, since it uses as much as digits as its factorization.

21302401024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401585 (or 10401565 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21302401024 its reverse (42010420312), we get a palindrome (63312821336).

The spelling of 21302401024 in words is "twenty-one billion, three hundred two million, four hundred one thousand, twenty-four".