344532491221 has 2 divisors, whose sum is σ = 344532491222. Its totient is φ = 344532491220.

The previous prime is 344532491203. The next prime is 344532491249. The reversal of 344532491221 is 122194235443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315438366321 + 29094124900 = 561639^2 + 170570^2 .

It is a cyclic number.

It is not a de Polignac number, because 344532491221 - 2²⁷ = 344398273493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344532491291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172266245610 + 172266245611.

It is an arithmetic number, because the mean of its divisors is an integer number (172266245611).

Almost surely, 2^344532491221 is an apocalyptic number.

It is an amenable number.

344532491221 is a deficient number, since it is larger than the sum of its proper divisors (1).

344532491221 is an equidigital number, since it uses as much as digits as its factorization.

344532491221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The spelling of 344532491221 in words is "three hundred forty-four billion, five hundred thirty-two million, four hundred ninety-one thousand, two hundred twenty-one".