221422323 has 8 divisors (see below), whose sum is σ = 297185536. Its totient is φ = 146637000.

The previous prime is 221422309. The next prime is 221422349. The reversal of 221422323 is 323224122.

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

It is not a de Polignac number, because 221422323 - 2⁴ = 221422307 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 221422323.

It is not an unprimeable number, because it can be changed into a prime (221422363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243943 + ... + 244848.

It is an arithmetic number, because the mean of its divisors is an integer number (37148192).

Almost surely, 2^221422323 is an apocalyptic number.

221422323 is a deficient number, since it is larger than the sum of its proper divisors (75763213).

221422323 is a wasteful number, since it uses less digits than its factorization.

221422323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488945.

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

The square root of 221422323 is about 14880.2662274571. The cubic root of 221422323 is about 604.9792338568.

Adding to 221422323 its reverse (323224122), we get a palindrome (544646445).

The spelling of 221422323 in words is "two hundred twenty-one million, four hundred twenty-two thousand, three hundred twenty-three".