221244201223 has 16 divisors (see below), whose sum is σ = 233238826080. Its totient is φ = 209542243456.

The previous prime is 221244201197. The next prime is 221244201253. The reversal of 221244201223 is 322102442122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221244201223 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 (221244201253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9697836 + ... + 9720622.

It is an arithmetic number, because the mean of its divisors is an integer number (14577426630).

Almost surely, 2^221244201223 is an apocalyptic number.

221244201223 is a deficient number, since it is larger than the sum of its proper divisors (11994624857).

221244201223 is a wasteful number, since it uses less digits than its factorization.

221244201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29186.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221244201223 its reverse (322102442122), we get a palindrome (543346643345).

The spelling of 221244201223 in words is "two hundred twenty-one billion, two hundred forty-four million, two hundred one thousand, two hundred twenty-three".