21324324044223 has 12 divisors (see below), whose sum is σ = 30810624645528. Its totient is φ = 14212143761040.

The previous prime is 21324324044207. The next prime is 21324324044237. The reversal of 21324324044223 is 32244042342312.

21324324044223 is a `hidden beast` number, since 2 + 1 + 3 + 24 + 3 + 2 + 404 + 4 + 223 = 666.

It is not a de Polignac number, because 21324324044223 - 2⁴ = 21324324044207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324324444223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339322540 + ... + 339385377.

It is an arithmetic number, because the mean of its divisors is an integer number (2567552053794).

Almost surely, 2^{21324324044223} is an apocalyptic number.

21324324044223 is a deficient number, since it is larger than the sum of its proper divisors (9486300601305).

21324324044223 is a wasteful number, since it uses less digits than its factorization.

21324324044223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678711414 (or 678711411 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 21324324044223 its reverse (32244042342312), we get a palindrome (53568366386535).

The spelling of 21324324044223 in words is "twenty-one trillion, three hundred twenty-four billion, three hundred twenty-four million, forty-four thousand, two hundred twenty-three".