21301163297 has 2 divisors, whose sum is σ = 21301163298. Its totient is φ = 21301163296.

The previous prime is 21301163189. The next prime is 21301163347. The reversal of 21301163297 is 79236110312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21293813776 + 7349521 = 145924^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 21301163297 - 2⁸ = 21301163041 is a prime.

It is not a weakly prime, because it can be changed into another prime (21301163497) 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, 10650581648 + 10650581649.

It is an arithmetic number, because the mean of its divisors is an integer number (10650581649).

Almost surely, 2^21301163297 is an apocalyptic number.

It is an amenable number.

21301163297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301163297 is an equidigital number, since it uses as much as digits as its factorization.

21301163297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 21301163297 in words is "twenty-one billion, three hundred one million, one hundred sixty-three thousand, two hundred ninety-seven".