1202121099197 has 2 divisors, whose sum is σ = 1202121099198. Its totient is φ = 1202121099196.

The previous prime is 1202121099191. The next prime is 1202121099209. The reversal of 1202121099197 is 7919901212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170332348761 + 31788750436 = 1081819^2 + 178294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202121099197 - 2¹⁰ = 1202121098173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202121099191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601060549598 + 601060549599.

It is an arithmetic number, because the mean of its divisors is an integer number (601060549599).

Almost surely, 2^{1202121099197} is an apocalyptic number.

It is an amenable number.

1202121099197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202121099197 is an equidigital number, since it uses as much as digits as its factorization.

1202121099197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 44.

The spelling of 1202121099197 in words is "one trillion, two hundred two billion, one hundred twenty-one million, ninety-nine thousand, one hundred ninety-seven".