4422041021 has 2 divisors, whose sum is σ = 4422041022. Its totient is φ = 4422041020.

The previous prime is 4422040999. The next prime is 4422041033. The reversal of 4422041021 is 1201402244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4210192996 + 211848025 = 64886^2 + 14555^2 .

It is a cyclic number.

It is not a de Polignac number, because 4422041021 - 2¹⁴ = 4422024637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4422040984 and 4422041002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4422041521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211020510 + 2211020511.

It is an arithmetic number, because the mean of its divisors is an integer number (2211020511).

Almost surely, 2^4422041021 is an apocalyptic number.

It is an amenable number.

4422041021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4422041021 is an equidigital number, since it uses as much as digits as its factorization.

4422041021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4422041021 is about 66498.4287107598. The cubic root of 4422041021 is about 1641.3741483306.

Adding to 4422041021 its reverse (1201402244), we get a palindrome (5623443265).

The spelling of 4422041021 in words is "four billion, four hundred twenty-two million, forty-one thousand, twenty-one".