1247131002197 has 2 divisors, whose sum is σ = 1247131002198. Its totient is φ = 1247131002196.

The previous prime is 1247131002157. The next prime is 1247131002203. The reversal of 1247131002197 is 7912001317421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1035654264241 + 211476737956 = 1017671^2 + 459866^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247131002197 - 2¹⁰ = 1247131001173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1247131002197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247131002157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623565501098 + 623565501099.

It is an arithmetic number, because the mean of its divisors is an integer number (623565501099).

Almost surely, 2^{1247131002197} is an apocalyptic number.

It is an amenable number.

1247131002197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247131002197 is an equidigital number, since it uses as much as digits as its factorization.

1247131002197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 1247131002197 in words is "one trillion, two hundred forty-seven billion, one hundred thirty-one million, two thousand, one hundred ninety-seven".