4221020017 has 2 divisors, whose sum is σ = 4221020018. Its totient is φ = 4221020016.

The previous prime is 4221020009. The next prime is 4221020059. The reversal of 4221020017 is 7100201224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3545487936 + 675532081 = 59544^2 + 25991^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221020017 - 2³ = 4221020009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4221019976 and 4221020003.

It is not a weakly prime, because it can be changed into another prime (4221020317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110510008 + 2110510009.

It is an arithmetic number, because the mean of its divisors is an integer number (2110510009).

Almost surely, 2^4221020017 is an apocalyptic number.

It is an amenable number.

4221020017 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221020017 is an equidigital number, since it uses as much as digits as its factorization.

4221020017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 4221020017 is about 64969.3775328039. The cubic root of 4221020017 is about 1616.1157790918.

The spelling of 4221020017 in words is "four billion, two hundred twenty-one million, twenty thousand, seventeen".