1012117055197 has 2 divisors, whose sum is σ = 1012117055198. Its totient is φ = 1012117055196.

The previous prime is 1012117055123. The next prime is 1012117055207. The reversal of 1012117055197 is 7915507112101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958335270916 + 53781784281 = 978946^2 + 231909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012117055197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012117055797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506058527598 + 506058527599.

It is an arithmetic number, because the mean of its divisors is an integer number (506058527599).

Almost surely, 2^{1012117055197} is an apocalyptic number.

It is an amenable number.

1012117055197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012117055197 is an equidigital number, since it uses as much as digits as its factorization.

1012117055197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22050, while the sum is 40.

The spelling of 1012117055197 in words is "one trillion, twelve billion, one hundred seventeen million, fifty-five thousand, one hundred ninety-seven".