221112223 has 8 divisors (see below), whose sum is σ = 223881840. Its totient is φ = 218349120.

The previous prime is 221112191. The next prime is 221112239. The reversal of 221112223 is 322211122.

It is a happy number.

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 221112223 - 2⁵ = 221112191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221112197 and 221112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126133 + ... + 127873.

It is an arithmetic number, because the mean of its divisors is an integer number (27985230).

Almost surely, 2^221112223 is an apocalyptic number.

221112223 is a deficient number, since it is larger than the sum of its proper divisors (2769617).

221112223 is a wasteful number, since it uses less digits than its factorization.

221112223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257.

The product of its digits is 96, while the sum is 16.

The square root of 221112223 is about 14869.8427362229. The cubic root of 221112223 is about 604.6966792264.

Adding to 221112223 its reverse (322211122), we get a palindrome (543323345).

The spelling of 221112223 in words is "two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-three".