21302320320211 has 16 divisors (see below), whose sum is σ = 24391838465280. Its totient is φ = 18224394248160.

The previous prime is 21302320320199. The next prime is 21302320320233. The reversal of 21302320320211 is 11202302320312.

It is a cyclic number.

It is not a de Polignac number, because 21302320320211 - 2⁹ = 21302320319699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302320324211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26215845 + ... + 27016201.

It is an arithmetic number, because the mean of its divisors is an integer number (1524489904080).

Almost surely, 2^{21302320320211} is an apocalyptic number.

21302320320211 is a deficient number, since it is larger than the sum of its proper divisors (3089518145069).

21302320320211 is an equidigital number, since it uses as much as digits as its factorization.

21302320320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807594.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21302320320211 its reverse (11202302320312), we get a palindrome (32504622640523).

The spelling of 21302320320211 in words is "twenty-one trillion, three hundred two billion, three hundred twenty million, three hundred twenty thousand, two hundred eleven".