21133304303 has 2 divisors, whose sum is σ = 21133304304. Its totient is φ = 21133304302.

The previous prime is 21133304281. The next prime is 21133304329. The reversal of 21133304303 is 30340333112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21133304303 - 2⁶ = 21133304239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21133354303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566652151 + 10566652152.

It is an arithmetic number, because the mean of its divisors is an integer number (10566652152).

Almost surely, 2^21133304303 is an apocalyptic number.

21133304303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133304303 is an equidigital number, since it uses as much as digits as its factorization.

21133304303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21133304303 its reverse (30340333112), we get a palindrome (51473637415).

The spelling of 21133304303 in words is "twenty-one billion, one hundred thirty-three million, three hundred four thousand, three hundred three".