21303302330 has 16 divisors (see below), whose sum is σ = 38461798944. Its totient is φ = 8495575440.

The previous prime is 21303302323. The next prime is 21303302359. The reversal of 21303302330 is 3320330312.

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 3214712 + ... + 3221331.

It is an arithmetic number, because the mean of its divisors is an integer number (2403862434).

Almost surely, 2^21303302330 is an apocalyptic number.

21303302330 is a deficient number, since it is larger than the sum of its proper divisors (17158496614).

21303302330 is a wasteful number, since it uses less digits than its factorization.

21303302330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436381.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 21303302330 its reverse (3320330312), we get a palindrome (24623632642).

The spelling of 21303302330 in words is "twenty-one billion, three hundred three million, three hundred two thousand, three hundred thirty".