244203330421 has 2 divisors, whose sum is σ = 244203330422. Its totient is φ = 244203330420.

The previous prime is 244203330419. The next prime is 244203330439. The reversal of 244203330421 is 124033302442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243823626225 + 379704196 = 493785^2 + 19486^2 .

It is a cyclic number.

It is not a de Polignac number, because 244203330421 - 2¹ = 244203330419 is a prime.

Together with 244203330419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 244203330421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244203330401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122101665210 + 122101665211.

It is an arithmetic number, because the mean of its divisors is an integer number (122101665211).

Almost surely, 2^244203330421 is an apocalyptic number.

It is an amenable number.

244203330421 is a deficient number, since it is larger than the sum of its proper divisors (1).

244203330421 is an equidigital number, since it uses as much as digits as its factorization.

244203330421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 244203330421 its reverse (124033302442), we get a palindrome (368236632863).

The spelling of 244203330421 in words is "two hundred forty-four billion, two hundred three million, three hundred thirty thousand, four hundred twenty-one".