21334400303 has 2 divisors, whose sum is σ = 21334400304. Its totient is φ = 21334400302.

The previous prime is 21334400273. The next prime is 21334400357. The reversal of 21334400303 is 30300443312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21334400303 - 2⁶ = 21334400239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21334300303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667200151 + 10667200152.

It is an arithmetic number, because the mean of its divisors is an integer number (10667200152).

Almost surely, 2^21334400303 is an apocalyptic number.

21334400303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21334400303 is an equidigital number, since it uses as much as digits as its factorization.

21334400303 is an evil number, because the sum of its binary digits is even.

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

Adding to 21334400303 its reverse (30300443312), we get a palindrome (51634843615).

The spelling of 21334400303 in words is "twenty-one billion, three hundred thirty-four million, four hundred thousand, three hundred three".