12121021001197 has 2 divisors, whose sum is σ = 12121021001198. Its totient is φ = 12121021001196.

The previous prime is 12121021001161. The next prime is 12121021001203. The reversal of 12121021001197 is 79110012012121.

12121021001197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12074033502441 + 46987498756 = 3474771^2 + 216766^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121021001197 - 2¹¹ = 12121020999149 is a prime.

It is a super-2 number, since 2×12121021001197² (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 (12121021001107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060510500598 + 6060510500599.

It is an arithmetic number, because the mean of its divisors is an integer number (6060510500599).

Almost surely, 2^{12121021001197} is an apocalyptic number.

It is an amenable number.

12121021001197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121021001197 is an equidigital number, since it uses as much as digits as its factorization.

12121021001197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 12121021001197 in words is "twelve trillion, one hundred twenty-one billion, twenty-one million, one thousand, one hundred ninety-seven".