4201065221 has 2 divisors, whose sum is σ = 4201065222. Its totient is φ = 4201065220.

The previous prime is 4201065203. The next prime is 4201065229. The reversal of 4201065221 is 1225601024.

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., 3962702500 + 238362721 = 62950^2 + 15439^2 .

It is a cyclic number.

It is not a de Polignac number, because 4201065221 - 2²⁶ = 4133956357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4201065229) 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, 2100532610 + 2100532611.

It is an arithmetic number, because the mean of its divisors is an integer number (2100532611).

Almost surely, 2^4201065221 is an apocalyptic number.

It is an amenable number.

4201065221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4201065221 is an equidigital number, since it uses as much as digits as its factorization.

4201065221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4201065221 is about 64815.6248214888. The cubic root of 4201065221 is about 1613.5650359292.

Adding to 4201065221 its reverse (1225601024), we get a palindrome (5426666245).

The spelling of 4201065221 in words is "four billion, two hundred one million, sixty-five thousand, two hundred twenty-one".