4221020201 has 2 divisors, whose sum is σ = 4221020202. Its totient is φ = 4221020200.

The previous prime is 4221020149. The next prime is 4221020213. The reversal of 4221020201 is 1020201224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4212139801 + 8880400 = 64901^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221020201 - 2¹⁰ = 4221019177 is a prime.

It is not a weakly prime, because it can be changed into another prime (4221020231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110510100 + 2110510101.

It is an arithmetic number, because the mean of its divisors is an integer number (2110510101).

Almost surely, 2^4221020201 is an apocalyptic number.

It is an amenable number.

4221020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221020201 is an equidigital number, since it uses as much as digits as its factorization.

4221020201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4221020201 is about 64969.3789488556. The cubic root of 4221020201 is about 1616.1158025747.

Adding to 4221020201 its reverse (1020201224), we get a palindrome (5241221425).

The spelling of 4221020201 in words is "four billion, two hundred twenty-one million, twenty thousand, two hundred one".