344454055223221 has 2 divisors, whose sum is σ = 344454055223222. Its totient is φ = 344454055223220.

The previous prime is 344454055223119. The next prime is 344454055223269. The reversal of 344454055223221 is 122322550454443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339029767643121 + 5424287580100 = 18412761^2 + 2329010^2 .

It is a cyclic number.

It is not a de Polignac number, because 344454055223221 - 2²¹ = 344454053126069 is a prime.

It is a super-2 number, since 2×344454055223221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344454055253221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172227027611610 + 172227027611611.

It is an arithmetic number, because the mean of its divisors is an integer number (172227027611611).

Almost surely, 2^{344454055223221} is an apocalyptic number.

It is an amenable number.

344454055223221 is a deficient number, since it is larger than the sum of its proper divisors (1).

344454055223221 is an equidigital number, since it uses as much as digits as its factorization.

344454055223221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608000, while the sum is 46.

The spelling of 344454055223221 in words is "three hundred forty-four trillion, four hundred fifty-four billion, fifty-five million, two hundred twenty-three thousand, two hundred twenty-one".