21010013303 has 2 divisors, whose sum is σ = 21010013304. Its totient is φ = 21010013302.

The previous prime is 21010013291. The next prime is 21010013317. The reversal of 21010013303 is 30331001012.

It is an a-pointer prime, because the next prime (21010013317) can be obtained adding 21010013303 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21010013303 - 2¹⁰ = 21010012279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010013393) 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, 10505006651 + 10505006652.

It is an arithmetic number, because the mean of its divisors is an integer number (10505006652).

Almost surely, 2^21010013303 is an apocalyptic number.

21010013303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010013303 is an equidigital number, since it uses as much as digits as its factorization.

21010013303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21010013303 its reverse (30331001012), we get a palindrome (51341014315).

The spelling of 21010013303 in words is "twenty-one billion, ten million, thirteen thousand, three hundred three".