12212120112197 has 2 divisors, whose sum is σ = 12212120112198. Its totient is φ = 12212120112196.

The previous prime is 12212120112193. The next prime is 12212120112263. The reversal of 12212120112197 is 79121102121221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11649941066401 + 562179045796 = 3413201^2 + 749786^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212120112197 - 2² = 12212120112193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212120112193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106060056098 + 6106060056099.

It is an arithmetic number, because the mean of its divisors is an integer number (6106060056099).

Almost surely, 2^{12212120112197} is an apocalyptic number.

It is an amenable number.

12212120112197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212120112197 is an equidigital number, since it uses as much as digits as its factorization.

12212120112197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 32.

The spelling of 12212120112197 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred twelve thousand, one hundred ninety-seven".