344855258221 has 2 divisors, whose sum is σ = 344855258222. Its totient is φ = 344855258220.

The previous prime is 344855258147. The next prime is 344855258227. The reversal of 344855258221 is 122852558443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343173356100 + 1681902121 = 585810^2 + 41011^2 .

It is an emirp because it is prime and its reverse (122852558443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344855258221 - 2¹⁵ = 344855225453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344855258227) 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, 172427629110 + 172427629111.

It is an arithmetic number, because the mean of its divisors is an integer number (172427629111).

Almost surely, 2^344855258221 is an apocalyptic number.

It is an amenable number.

344855258221 is a deficient number, since it is larger than the sum of its proper divisors (1).

344855258221 is an equidigital number, since it uses as much as digits as its factorization.

344855258221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072000, while the sum is 49.

The spelling of 344855258221 in words is "three hundred forty-four billion, eight hundred fifty-five million, two hundred fifty-eight thousand, two hundred twenty-one".