21300210223 has 4 divisors (see below), whose sum is σ = 21427756560. Its totient is φ = 21172663888.

The previous prime is 21300210187. The next prime is 21300210289. The reversal of 21300210223 is 32201200312.

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

It is a cyclic number.

It is not a de Polignac number, because 21300210223 - 2¹³ = 21300202031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21300210197 and 21300210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300210293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63772918 + ... + 63773251.

It is an arithmetic number, because the mean of its divisors is an integer number (5356939140).

Almost surely, 2^21300210223 is an apocalyptic number.

21300210223 is a deficient number, since it is larger than the sum of its proper divisors (127546337).

21300210223 is a wasteful number, since it uses less digits than its factorization.

21300210223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127546336.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21300210223 its reverse (32201200312), we get a palindrome (53501410535).

The spelling of 21300210223 in words is "twenty-one billion, three hundred million, two hundred ten thousand, two hundred twenty-three".