21233000303 has 2 divisors, whose sum is σ = 21233000304. Its totient is φ = 21233000302.

The previous prime is 21233000297. The next prime is 21233000329. The reversal of 21233000303 is 30300033212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21233000303 - 2¹⁸ = 21232738159 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233300303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616500151 + 10616500152.

It is an arithmetic number, because the mean of its divisors is an integer number (10616500152).

Almost surely, 2^21233000303 is an apocalyptic number.

21233000303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233000303 is an equidigital number, since it uses as much as digits as its factorization.

21233000303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 21233000303 its reverse (30300033212), we get a palindrome (51533033515).

The spelling of 21233000303 in words is "twenty-one billion, two hundred thirty-three million, three hundred three", and thus it is an aban number.