21300323223 has 8 divisors (see below), whose sum is σ = 28936288368. Its totient is φ = 13932286784.

The previous prime is 21300323203. The next prime is 21300323251. The reversal of 21300323223 is 32232300312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21300323223 - 2⁶ = 21300323159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21300323223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300323203) 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 in 7 ways as a sum of consecutive naturals, for example, 66981990 + ... + 66982307.

It is an arithmetic number, because the mean of its divisors is an integer number (3617036046).

Almost surely, 2^21300323223 is an apocalyptic number.

21300323223 is a deficient number, since it is larger than the sum of its proper divisors (7635965145).

21300323223 is a wasteful number, since it uses less digits than its factorization.

21300323223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133964353.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21300323223 its reverse (32232300312), we get a palindrome (53532623535).

The spelling of 21300323223 in words is "twenty-one billion, three hundred million, three hundred twenty-three thousand, two hundred twenty-three".