4043223221 has 8 divisors (see below), whose sum is σ = 4138425984. Its totient is φ = 3948073920.

The previous prime is 4043223157. The next prime is 4043223229. The reversal of 4043223221 is 1223223404.

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 4043223221 - 2⁶ = 4043223157 is a prime.

It is a super-2 number, since 2×4043223221² = 32695308029667229682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4043223229) 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, 168356 + ... + 190866.

It is an arithmetic number, because the mean of its divisors is an integer number (517303248).

Almost surely, 2^4043223221 is an apocalyptic number.

It is an amenable number.

4043223221 is a deficient number, since it is larger than the sum of its proper divisors (95202763).

4043223221 is a wasteful number, since it uses less digits than its factorization.

4043223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26731.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4043223221 is about 63586.3446110877. The cubic root of 4043223221 is about 1593.0982954202.

Adding to 4043223221 its reverse (1223223404), we get a palindrome (5266446625).

The spelling of 4043223221 in words is "four billion, forty-three million, two hundred twenty-three thousand, two hundred twenty-one".