221323323023 has 8 divisors (see below), whose sum is σ = 249232129536. Its totient is φ = 194712600600.

The previous prime is 221323322981. The next prime is 221323323073. The reversal of 221323323023 is 320323323122.

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 221323323023 - 2²⁰ = 221322274447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221323322983 and 221323323001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221323323073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324520661 + ... + 324521342.

It is an arithmetic number, because the mean of its divisors is an integer number (31154016192).

Almost surely, 2^221323323023 is an apocalyptic number.

221323323023 is a deficient number, since it is larger than the sum of its proper divisors (27908806513).

221323323023 is a wasteful number, since it uses less digits than its factorization.

221323323023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649042045.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 221323323023 its reverse (320323323122), we get a palindrome (541646646145).

Subtracting 221323323023 from its reverse (320323323122), we obtain a palindrome (99000000099).

The spelling of 221323323023 in words is "two hundred twenty-one billion, three hundred twenty-three million, three hundred twenty-three thousand, twenty-three".