21302320023223 has 4 divisors (see below), whose sum is σ = 21302346001248. Its totient is φ = 21302294045200.

The previous prime is 21302320023203. The next prime is 21302320023241. The reversal of 21302320023223 is 32232002320312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21302320023223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302320023203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11717503 + ... + 13412848.

It is an arithmetic number, because the mean of its divisors is an integer number (5325586500312).

Almost surely, 2^{21302320023223} is an apocalyptic number.

21302320023223 is a deficient number, since it is larger than the sum of its proper divisors (25978025).

21302320023223 is an equidigital number, since it uses as much as digits as its factorization.

21302320023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25978024.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21302320023223 its reverse (32232002320312), we get a palindrome (53534322343535).

The spelling of 21302320023223 in words is "twenty-one trillion, three hundred two billion, three hundred twenty million, twenty-three thousand, two hundred twenty-three".