4321440221 has 8 divisors (see below), whose sum is σ = 5059247424. Its totient is φ = 3613747680.

The previous prime is 4321440209. The next prime is 4321440223. The reversal of 4321440221 is 1220441234.

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 4321440221 - 2¹⁰ = 4321439197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321440223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7528355 + ... + 7528928.

It is an arithmetic number, because the mean of its divisors is an integer number (632405928).

Almost surely, 2^4321440221 is an apocalyptic number.

4321440221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4321440221 is a deficient number, since it is larger than the sum of its proper divisors (737807203).

4321440221 is a wasteful number, since it uses less digits than its factorization.

4321440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15057331.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4321440221 is about 65737.6621199750. The cubic root of 4321440221 is about 1628.8315387947.

Adding to 4321440221 its reverse (1220441234), we get a palindrome (5541881455).

The spelling of 4321440221 in words is "four billion, three hundred twenty-one million, four hundred forty thousand, two hundred twenty-one".