4045160221 has 2 divisors, whose sum is σ = 4045160222. Its totient is φ = 4045160220.

The previous prime is 4045160201. The next prime is 4045160237. The reversal of 4045160221 is 1220615404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3823567225 + 221592996 = 61835^2 + 14886^2 .

It is a cyclic number.

It is not a de Polignac number, because 4045160221 - 2²¹ = 4043063069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4045160201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022580110 + 2022580111.

It is an arithmetic number, because the mean of its divisors is an integer number (2022580111).

Almost surely, 2^4045160221 is an apocalyptic number.

It is an amenable number.

4045160221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045160221 is an equidigital number, since it uses as much as digits as its factorization.

4045160221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4045160221 is about 63601.5740449873. The cubic root of 4045160221 is about 1593.3526583860.

Adding to 4045160221 its reverse (1220615404), we get a palindrome (5265775625).

The spelling of 4045160221 in words is "four billion, forty-five million, one hundred sixty thousand, two hundred twenty-one".