4210442221 has 2 divisors, whose sum is σ = 4210442222. Its totient is φ = 4210442220.

The previous prime is 4210442209. The next prime is 4210442231. The reversal of 4210442221 is 1222440124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3752910121 + 457532100 = 61261^2 + 21390^2 .

It is a cyclic number.

It is not a de Polignac number, because 4210442221 - 2²¹ = 4208345069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4210442192 and 4210442201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4210442231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105221110 + 2105221111.

It is an arithmetic number, because the mean of its divisors is an integer number (2105221111).

Almost surely, 2^4210442221 is an apocalyptic number.

It is an amenable number.

4210442221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4210442221 is an equidigital number, since it uses as much as digits as its factorization.

4210442221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 4210442221 is about 64887.9204551972. The cubic root of 4210442221 is about 1614.7646646901.

Adding to 4210442221 its reverse (1222440124), we get a palindrome (5432882345).

The spelling of 4210442221 in words is "four billion, two hundred ten million, four hundred forty-two thousand, two hundred twenty-one".