21323020233223 has 16 divisors (see below), whose sum is σ = 21722081731200. Its totient is φ = 20925235225440.

The previous prime is 21323020233199. The next prime is 21323020233259. The reversal of 21323020233223 is 32233202032312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21323020233223 - 2⁹ = 21323020232711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323020233191 and 21323020233200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323020233293) 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, 118017288 + ... + 118197826.

It is an arithmetic number, because the mean of its divisors is an integer number (1357630108200).

Almost surely, 2^{21323020233223} is an apocalyptic number.

21323020233223 is a deficient number, since it is larger than the sum of its proper divisors (399061497977).

21323020233223 is a wasteful number, since it uses less digits than its factorization.

21323020233223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184062.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 21323020233223 its reverse (32233202032312), we get a palindrome (53556222265535).

The spelling of 21323020233223 in words is "twenty-one trillion, three hundred twenty-three billion, twenty million, two hundred thirty-three thousand, two hundred twenty-three".