21033302324 has 6 divisors (see below), whose sum is σ = 36808279074. Its totient is φ = 10516651160.

The previous prime is 21033302281. The next prime is 21033302351. The reversal of 21033302324 is 42320333012.

It can be written as a sum of positive squares in only one way, i.e., 17106024100 + 3927278224 = 130790^2 + 62668^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21033302324.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2629162787 + ... + 2629162794.

It is an arithmetic number, because the mean of its divisors is an integer number (6134713179).

Almost surely, 2^21033302324 is an apocalyptic number.

It is an amenable number.

21033302324 is a deficient number, since it is larger than the sum of its proper divisors (15774976750).

21033302324 is a wasteful number, since it uses less digits than its factorization.

21033302324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258325585 (or 5258325583 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21033302324 its reverse (42320333012), we get a palindrome (63353635336).

The spelling of 21033302324 in words is "twenty-one billion, thirty-three million, three hundred two thousand, three hundred twenty-four".