2000442221 has 2 divisors, whose sum is σ = 2000442222. Its totient is φ = 2000442220.

The previous prime is 2000442203. The next prime is 2000442281. The reversal of 2000442221 is 1222440002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1847796196 + 152646025 = 42986^2 + 12355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000442221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2000442221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000442281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000221110 + 1000221111.

It is an arithmetic number, because the mean of its divisors is an integer number (1000221111).

Almost surely, 2^2000442221 is an apocalyptic number.

It is an amenable number.

2000442221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000442221 is an equidigital number, since it uses as much as digits as its factorization.

2000442221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2000442221 is about 44726.3034578088. The cubic root of 2000442221 is about 1260.0139036427.

Adding to 2000442221 its reverse (1222440002), we get a palindrome (3222882223).

The spelling of 2000442221 in words is "two billion, four hundred forty-two thousand, two hundred twenty-one".