4044143221 has 2 divisors, whose sum is σ = 4044143222. Its totient is φ = 4044143220.

The previous prime is 4044143197. The next prime is 4044143237. The reversal of 4044143221 is 1223414404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3768118225 + 276024996 = 61385^2 + 16614^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044143221 - 2⁵ = 4044143189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4044143321) 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 as a sum of consecutive naturals, namely, 2022071610 + 2022071611.

It is an arithmetic number, because the mean of its divisors is an integer number (2022071611).

Almost surely, 2^4044143221 is an apocalyptic number.

It is an amenable number.

4044143221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4044143221 is an equidigital number, since it uses as much as digits as its factorization.

4044143221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4044143221 is about 63593.5784572625. The cubic root of 4044143221 is about 1593.2191181072.

Adding to 4044143221 its reverse (1223414404), we get a palindrome (5267557625).

The spelling of 4044143221 in words is "four billion, forty-four million, one hundred forty-three thousand, two hundred twenty-one".