12221211295169 has 2 divisors, whose sum is σ = 12221211295170. Its totient is φ = 12221211295168.

The previous prime is 12221211295129. The next prime is 12221211295171. The reversal of 12221211295169 is 96159211212221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11606967610000 + 614243685169 = 3406900^2 + 783737^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221211295169 - 2²⁴ = 12221194517953 is a prime.

It is a super-2 number, since 2×12221211295169² (a number of 27 digits) contains 22 as substring.

Together with 12221211295171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12221211295129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110605647584 + 6110605647585.

It is an arithmetic number, because the mean of its divisors is an integer number (6110605647585).

Almost surely, 2^{12221211295169} is an apocalyptic number.

It is an amenable number.

12221211295169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221211295169 is an equidigital number, since it uses as much as digits as its factorization.

12221211295169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 44.

The spelling of 12221211295169 in words is "twelve trillion, two hundred twenty-one billion, two hundred eleven million, two hundred ninety-five thousand, one hundred sixty-nine".