21300080213 has 2 divisors, whose sum is σ = 21300080214. Its totient is φ = 21300080212.

The previous prime is 21300080203. The next prime is 21300080227. The reversal of 21300080213 is 31208000312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18154328644 + 3145751569 = 134738^2 + 56087^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300080213 - 2¹⁰ = 21300079189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300080203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650040106 + 10650040107.

It is an arithmetic number, because the mean of its divisors is an integer number (10650040107).

Almost surely, 2^21300080213 is an apocalyptic number.

It is an amenable number.

21300080213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300080213 is an equidigital number, since it uses as much as digits as its factorization.

21300080213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21300080213 its reverse (31208000312), we get a palindrome (52508080525).

The spelling of 21300080213 in words is "twenty-one billion, three hundred million, eighty thousand, two hundred thirteen".