4430020121 has 2 divisors, whose sum is σ = 4430020122. Its totient is φ = 4430020120.

The previous prime is 4430020033. The next prime is 4430020163. The reversal of 4430020121 is 1210200344.

4430020121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4377674896 + 52345225 = 66164^2 + 7235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4430020121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4430020121.

It is not a weakly prime, because it can be changed into another prime (4430020921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215010060 + 2215010061.

It is an arithmetic number, because the mean of its divisors is an integer number (2215010061).

Almost surely, 2^4430020121 is an apocalyptic number.

It is an amenable number.

4430020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4430020121 is an equidigital number, since it uses as much as digits as its factorization.

4430020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4430020121 is about 66558.3963223274. The cubic root of 4430020121 is about 1642.3607831673.

Adding to 4430020121 its reverse (1210200344), we get a palindrome (5640220465).

The spelling of 4430020121 in words is "four billion, four hundred thirty million, twenty thousand, one hundred twenty-one".