221221233223 has 8 divisors (see below), whose sum is σ = 242311290480. Its totient is φ = 201028625280.

The previous prime is 221221233133. The next prime is 221221233263. The reversal of 221221233223 is 322332122122.

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 221221233223 - 2⁹ = 221221232711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221233263) 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, 224361813 + ... + 224362798.

It is an arithmetic number, because the mean of its divisors is an integer number (30288911310).

Almost surely, 2^221221233223 is an apocalyptic number.

221221233223 is a deficient number, since it is larger than the sum of its proper divisors (21090057257).

221221233223 is a wasteful number, since it uses less digits than its factorization.

221221233223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448724657.

The product of its digits is 3456, while the sum is 25.

Adding to 221221233223 its reverse (322332122122), we get a palindrome (543553355345).

The spelling of 221221233223 in words is "two hundred twenty-one billion, two hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty-three".