222423321 has 4 divisors (see below), whose sum is σ = 296564432. Its totient is φ = 148282212.

The previous prime is 222423307. The next prime is 222423323. The reversal of 222423321 is 123324222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222423321 - 2¹⁰ = 222422297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222423323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37070551 + ... + 37070556.

It is an arithmetic number, because the mean of its divisors is an integer number (74141108).

Almost surely, 2^222423321 is an apocalyptic number.

It is an amenable number.

222423321 is a deficient number, since it is larger than the sum of its proper divisors (74141111).

222423321 is an equidigital number, since it uses as much as digits as its factorization.

222423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74141110.

The product of its digits is 1152, while the sum is 21.

The square root of 222423321 is about 14913.8633827724. The cubic root of 222423321 is about 605.8895195560.

Adding to 222423321 its reverse (123324222), we get a palindrome (345747543).

Subtracting from 222423321 its reverse (123324222), we obtain a palindrome (99099099).

The spelling of 222423321 in words is "two hundred twenty-two million, four hundred twenty-three thousand, three hundred twenty-one".