21202310803 has 2 divisors, whose sum is σ = 21202310804. Its totient is φ = 21202310802.

The previous prime is 21202310711. The next prime is 21202310807. The reversal of 21202310803 is 30801320212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202310803 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202310807) by changing a digit.

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 as a sum of consecutive naturals, namely, 10601155401 + 10601155402.

It is an arithmetic number, because the mean of its divisors is an integer number (10601155402).

Almost surely, 2^21202310803 is an apocalyptic number.

21202310803 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202310803 is an equidigital number, since it uses as much as digits as its factorization.

21202310803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 21202310803 in words is "twenty-one billion, two hundred two million, three hundred ten thousand, eight hundred three".