121201202197 has 2 divisors, whose sum is σ = 121201202198. Its totient is φ = 121201202196.

The previous prime is 121201202191. The next prime is 121201202249. The reversal of 121201202197 is 791202102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85053306321 + 36147895876 = 291639^2 + 190126^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201202197 - 2²³ = 121192813589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201202191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600601098 + 60600601099.

It is an arithmetic number, because the mean of its divisors is an integer number (60600601099).

Almost surely, 2^121201202197 is an apocalyptic number.

It is an amenable number.

121201202197 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201202197 is an equidigital number, since it uses as much as digits as its factorization.

121201202197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 121201202197 in words is "one hundred twenty-one billion, two hundred one million, two hundred two thousand, one hundred ninety-seven".