21200022020223 has 64 divisors (see below), whose sum is σ = 32100018462720. Its totient is φ = 13825068719616.

The previous prime is 21200022020209. The next prime is 21200022020239. The reversal of 21200022020223 is 32202022000212.

21200022020223 is a `hidden beast` number, since 2 + 1 + 200 + 0 + 220 + 20 + 223 = 666.

It is not a de Polignac number, because 21200022020223 - 2¹⁶ = 21200021954687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200022020196 and 21200022020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200022020323) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293483236 + ... + 293555462.

It is an arithmetic number, because the mean of its divisors is an integer number (501562788480).

Almost surely, 2^{21200022020223} is an apocalyptic number.

21200022020223 is a deficient number, since it is larger than the sum of its proper divisors (10899996442497).

21200022020223 is a wasteful number, since it uses less digits than its factorization.

21200022020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73533 (or 73527 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21200022020223 its reverse (32202022000212), we get a palindrome (53402044020435).

The spelling of 21200022020223 in words is "twenty-one trillion, two hundred billion, twenty-two million, twenty thousand, two hundred twenty-three".