221222323 has 8 divisors (see below), whose sum is σ = 252949248. Its totient is φ = 189526344.

The previous prime is 221222311. The next prime is 221222327. The reversal of 221222323 is 323222122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221222323 - 2⁵ = 221222291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221222323.

It is not an unprimeable number, because it can be changed into a prime (221222327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10440 + ... + 23482.

It is an arithmetic number, because the mean of its divisors is an integer number (31618656).

Almost surely, 2^221222323 is an apocalyptic number.

221222323 is a deficient number, since it is larger than the sum of its proper divisors (31726925).

221222323 is a wasteful number, since it uses less digits than its factorization.

221222323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15473.

The product of its digits is 576, while the sum is 19.

The square root of 221222323 is about 14873.5443993690. The cubic root of 221222323 is about 604.7970295616.

Adding to 221222323 its reverse (323222122), we get a palindrome (544444445).

The spelling of 221222323 in words is "two hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-three".