12011122212197 has 2 divisors, whose sum is σ = 12011122212198. Its totient is φ = 12011122212196.

The previous prime is 12011122212181. The next prime is 12011122212247. The reversal of 12011122212197 is 79121222111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11392069545796 + 619052666401 = 3375214^2 + 786799^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011122212197 - 2⁴ = 12011122212181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011122212157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005561106098 + 6005561106099.

It is an arithmetic number, because the mean of its divisors is an integer number (6005561106099).

Almost surely, 2^{12011122212197} is an apocalyptic number.

It is an amenable number.

12011122212197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011122212197 is an equidigital number, since it uses as much as digits as its factorization.

12011122212197 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 12011122212197 in words is "twelve trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, one hundred ninety-seven".