12212221110197 has 2 divisors, whose sum is σ = 12212221110198. Its totient is φ = 12212221110196.

The previous prime is 12212221110179. The next prime is 12212221110227. The reversal of 12212221110197 is 79101112221221.

Together with previous prime (12212221110179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10131960089476 + 2080261020721 = 3183074^2 + 1442311^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212221110197 - 2⁸ = 12212221109941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212221116197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106110555098 + 6106110555099.

It is an arithmetic number, because the mean of its divisors is an integer number (6106110555099).

Almost surely, 2^{12212221110197} is an apocalyptic number.

It is an amenable number.

12212221110197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212221110197 is an equidigital number, since it uses as much as digits as its factorization.

12212221110197 is an evil number, because the sum of its binary digits is even.

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

The spelling of 12212221110197 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, one hundred ninety-seven".