21041303203 has 2 divisors, whose sum is σ = 21041303204. Its totient is φ = 21041303202.

The previous prime is 21041303177. The next prime is 21041303207. The reversal of 21041303203 is 30230314012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21041303203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21041303207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10520651601 + 10520651602.

It is an arithmetic number, because the mean of its divisors is an integer number (10520651602).

Almost surely, 2^21041303203 is an apocalyptic number.

21041303203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21041303203 is an equidigital number, since it uses as much as digits as its factorization.

21041303203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21041303203 its reverse (30230314012), we get a palindrome (51271617215).

The spelling of 21041303203 in words is "twenty-one billion, forty-one million, three hundred three thousand, two hundred three".