12213123223309 has 2 divisors, whose sum is σ = 12213123223310. Its totient is φ = 12213123223308.

The previous prime is 12213123223267. The next prime is 12213123223313. The reversal of 12213123223309 is 90332232131221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10312094450025 + 1901028773284 = 3211245^2 + 1378778^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213123223309 - 2¹¹ = 12213123221261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213123223409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106561611654 + 6106561611655.

It is an arithmetic number, because the mean of its divisors is an integer number (6106561611655).

Almost surely, 2^{12213123223309} is an apocalyptic number.

It is an amenable number.

12213123223309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213123223309 is an equidigital number, since it uses as much as digits as its factorization.

12213123223309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 12213123223309 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-three million, two hundred twenty-three thousand, three hundred nine".