2002440221 has 2 divisors, whose sum is σ = 2002440222. Its totient is φ = 2002440220.

The previous prime is 2002440179. The next prime is 2002440233. The reversal of 2002440221 is 1220442002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1891032196 + 111408025 = 43486^2 + 10555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002440221 - 2⁶ = 2002440157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002440221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002440521) 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, 1001220110 + 1001220111.

It is an arithmetic number, because the mean of its divisors is an integer number (1001220111).

Almost surely, 2^2002440221 is an apocalyptic number.

It is an amenable number.

2002440221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002440221 is an equidigital number, since it uses as much as digits as its factorization.

2002440221 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 2002440221 is about 44748.6337333331. The cubic root of 2002440221 is about 1260.4332559360.

Adding to 2002440221 its reverse (1220442002), we get a palindrome (3222882223).

The spelling of 2002440221 in words is "two billion, two million, four hundred forty thousand, two hundred twenty-one".