221244430223 has 4 divisors (see below), whose sum is σ = 224994335880. Its totient is φ = 217494524568.

The previous prime is 221244430217. The next prime is 221244430279. The reversal of 221244430223 is 322034442122.

221244430223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221244430223 - 2¹⁴ = 221244413839 is a prime.

It is a super-3 number, since 3×221244430223³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244430283) 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 3 ways as a sum of consecutive naturals, for example, 1874952740 + ... + 1874952857.

It is an arithmetic number, because the mean of its divisors is an integer number (56248583970).

Almost surely, 2^221244430223 is an apocalyptic number.

221244430223 is a deficient number, since it is larger than the sum of its proper divisors (3749905657).

221244430223 is an equidigital number, since it uses as much as digits as its factorization.

221244430223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749905656.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 221244430223 its reverse (322034442122), we get a palindrome (543278872345).

The spelling of 221244430223 in words is "two hundred twenty-one billion, two hundred forty-four million, four hundred thirty thousand, two hundred twenty-three".