344010221 has 2 divisors, whose sum is σ = 344010222. Its totient is φ = 344010220.

The previous prime is 344010197. The next prime is 344010223. The reversal of 344010221 is 122010443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308178025 + 35832196 = 17555^2 + 5986^2 .

It is an emirp because it is prime and its reverse (122010443) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344010221 is a prime.

Together with 344010223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 344010221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344010223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172005110 + 172005111.

It is an arithmetic number, because the mean of its divisors is an integer number (172005111).

Almost surely, 2^344010221 is an apocalyptic number.

It is an amenable number.

344010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

344010221 is an equidigital number, since it uses as much as digits as its factorization.

344010221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 344010221 is about 18547.5125286384. The cubic root of 344010221 is about 700.6865515884.

Adding to 344010221 its reverse (122010443), we get a palindrome (466020664).

The spelling of 344010221 in words is "three hundred forty-four million, ten thousand, two hundred twenty-one".