21301100263 has 2 divisors, whose sum is σ = 21301100264. Its totient is φ = 21301100262.

The previous prime is 21301100237. The next prime is 21301100389. The reversal of 21301100263 is 36200110312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21301100263 - 2²⁹ = 20764229351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21301100263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21301100063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650550131 + 10650550132.

It is an arithmetic number, because the mean of its divisors is an integer number (10650550132).

Almost surely, 2^21301100263 is an apocalyptic number.

21301100263 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301100263 is an equidigital number, since it uses as much as digits as its factorization.

21301100263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21301100263 its reverse (36200110312), we get a palindrome (57501210575).

The spelling of 21301100263 in words is "twenty-one billion, three hundred one million, one hundred thousand, two hundred sixty-three".