12221011011197 has 2 divisors, whose sum is σ = 12221011011198. Its totient is φ = 12221011011196.

The previous prime is 12221011011191. The next prime is 12221011011211. The reversal of 12221011011197 is 79111011012221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8507319726361 + 3713691284836 = 2916731^2 + 1927094^2 .

It is an emirp because it is prime and its reverse (79111011012221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12221011011197 - 2³⁸ = 11946133104253 is a prime.

It is a super-2 number, since 2×12221011011197² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221011011191) 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, 6110505505598 + 6110505505599.

It is an arithmetic number, because the mean of its divisors is an integer number (6110505505599).

Almost surely, 2^{12221011011197} is an apocalyptic number.

It is an amenable number.

12221011011197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221011011197 is an equidigital number, since it uses as much as digits as its factorization.

12221011011197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 29.

The spelling of 12221011011197 in words is "twelve trillion, two hundred twenty-one billion, eleven million, eleven thousand, one hundred ninety-seven".