224023243221 has 12 divisors (see below), whose sum is σ = 324740695500. Its totient is φ = 148817336640.

The previous prime is 224023243217. The next prime is 224023243273. The reversal of 224023243221 is 122342320422.

224023243221 is a `hidden beast` number, since 2 + 2 + 402 + 32 + 4 + 3 + 221 = 666.

224023243221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 137463719121 + 86559524100 = 370761^2 + 294210^2 .

It is not a de Polignac number, because 224023243221 - 2² = 224023243217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224023243211) 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 11 ways as a sum of consecutive naturals, for example, 44288346 + ... + 44293403.

It is an arithmetic number, because the mean of its divisors is an integer number (27061724625).

Almost surely, 2^224023243221 is an apocalyptic number.

It is an amenable number.

224023243221 is a deficient number, since it is larger than the sum of its proper divisors (100717452279).

224023243221 is a wasteful number, since it uses less digits than its factorization.

224023243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88582036 (or 88582033 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 224023243221 its reverse (122342320422), we get a palindrome (346365563643).

It can be divided in two parts, 22402 and 3243221, that added together give a palindrome (3265623).

The spelling of 224023243221 in words is "two hundred twenty-four billion, twenty-three million, two hundred forty-three thousand, two hundred twenty-one".