21300563027 has 2 divisors, whose sum is σ = 21300563028. Its totient is φ = 21300563026.

The previous prime is 21300563003. The next prime is 21300563069. The reversal of 21300563027 is 72036500312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21300563027 - 2⁸ = 21300562771 is a prime.

It is not a weakly prime, because it can be changed into another prime (21300563077) 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, 10650281513 + 10650281514.

It is an arithmetic number, because the mean of its divisors is an integer number (10650281514).

Almost surely, 2^21300563027 is an apocalyptic number.

21300563027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300563027 is an equidigital number, since it uses as much as digits as its factorization.

21300563027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 21300563027 in words is "twenty-one billion, three hundred million, five hundred sixty-three thousand, twenty-seven".