4221021041 has 2 divisors, whose sum is σ = 4221021042. Its totient is φ = 4221021040.

The previous prime is 4221021031. The next prime is 4221021131. The reversal of 4221021041 is 1401201224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2221142641 + 1999878400 = 47129^2 + 44720^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221021041 - 2¹⁰ = 4221020017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4221021031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110510520 + 2110510521.

It is an arithmetic number, because the mean of its divisors is an integer number (2110510521).

Almost surely, 2^4221021041 is an apocalyptic number.

It is an amenable number.

4221021041 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221021041 is an equidigital number, since it uses as much as digits as its factorization.

4221021041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4221021041 is about 64969.3854134392. The cubic root of 4221021041 is about 1616.1159097792.

Adding to 4221021041 its reverse (1401201224), we get a palindrome (5622222265).

The spelling of 4221021041 in words is "four billion, two hundred twenty-one million, twenty-one thousand, forty-one".