4420341221 has 2 divisors, whose sum is σ = 4420341222. Its totient is φ = 4420341220.

The previous prime is 4420341199. The next prime is 4420341223. The reversal of 4420341221 is 1221430244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4114581025 + 305760196 = 64145^2 + 17486^2 .

It is a cyclic number.

It is not a de Polignac number, because 4420341221 - 2⁶ = 4420341157 is a prime.

It is a Sophie Germain prime.

Together with 4420341223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4420341223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210170610 + 2210170611.

It is an arithmetic number, because the mean of its divisors is an integer number (2210170611).

Almost surely, 2^4420341221 is an apocalyptic number.

It is an amenable number.

4420341221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4420341221 is an equidigital number, since it uses as much as digits as its factorization.

4420341221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4420341221 is about 66485.6467292001. The cubic root of 4420341221 is about 1641.1638106662.

Adding to 4420341221 its reverse (1221430244), we get a palindrome (5641771465).

The spelling of 4420341221 in words is "four billion, four hundred twenty million, three hundred forty-one thousand, two hundred twenty-one".