11212221110197 has 2 divisors, whose sum is σ = 11212221110198. Its totient is φ = 11212221110196.

The previous prime is 11212221110179. The next prime is 11212221110269. The reversal of 11212221110197 is 79101112221211.

Together with previous prime (11212221110179) 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., 8730127993041 + 2482093117156 = 2954679^2 + 1575466^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212221110197 - 2³⁵ = 11177861371829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212221110107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606110555098 + 5606110555099.

It is an arithmetic number, because the mean of its divisors is an integer number (5606110555099).

Almost surely, 2^{11212221110197} is an apocalyptic number.

It is an amenable number.

11212221110197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212221110197 is an equidigital number, since it uses as much as digits as its factorization.

11212221110197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 31.

The spelling of 11212221110197 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, one hundred ninety-seven".