21232304024 has 16 divisors (see below), whose sum is σ = 39821359200. Its totient is φ = 10613274912.

The previous prime is 21232304017. The next prime is 21232304029. The reversal of 21232304024 is 42040323212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232304029) 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, 328112 + ... + 387455.

It is an arithmetic number, because the mean of its divisors is an integer number (2488834950).

Almost surely, 2^21232304024 is an apocalyptic number.

It is an amenable number.

21232304024 is a deficient number, since it is larger than the sum of its proper divisors (18589055176).

21232304024 is a wasteful number, since it uses less digits than its factorization.

21232304024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719282 (or 719278 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21232304024 its reverse (42040323212), we get a palindrome (63272627236).

The spelling of 21232304024 in words is "twenty-one billion, two hundred thirty-two million, three hundred four thousand, twenty-four".