12001212020197 has 2 divisors, whose sum is σ = 12001212020198. Its totient is φ = 12001212020196.

The previous prime is 12001212020167. The next prime is 12001212020269. The reversal of 12001212020197 is 79102021210021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6640176537316 + 5361035482881 = 2576854^2 + 2315391^2 .

It is an emirp because it is prime and its reverse (79102021210021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12001212020197 - 2¹¹ = 12001212018149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001212020167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000606010098 + 6000606010099.

It is an arithmetic number, because the mean of its divisors is an integer number (6000606010099).

Almost surely, 2^{12001212020197} is an apocalyptic number.

It is an amenable number.

12001212020197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001212020197 is an equidigital number, since it uses as much as digits as its factorization.

12001212020197 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 28.

The spelling of 12001212020197 in words is "twelve trillion, one billion, two hundred twelve million, twenty thousand, one hundred ninety-seven".