21227063713 has 2 divisors, whose sum is σ = 21227063714. Its totient is φ = 21227063712.

The previous prime is 21227063707. The next prime is 21227063717. The reversal of 21227063713 is 31736072212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11403676944 + 9823386769 = 106788^2 + 99113^2 .

It is a cyclic number.

It is not a de Polignac number, because 21227063713 - 2²⁹ = 20690192801 is a prime.

It is a super-2 number, since 2×21227063713² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21227063717) 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, 10613531856 + 10613531857.

It is an arithmetic number, because the mean of its divisors is an integer number (10613531857).

Almost surely, 2^21227063713 is an apocalyptic number.

It is an amenable number.

21227063713 is a deficient number, since it is larger than the sum of its proper divisors (1).

21227063713 is an equidigital number, since it uses as much as digits as its factorization.

21227063713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 21227063713 in words is "twenty-one billion, two hundred twenty-seven million, sixty-three thousand, seven hundred thirteen".