1011201210197 has 2 divisors, whose sum is σ = 1011201210198. Its totient is φ = 1011201210196.

The previous prime is 1011201210143. The next prime is 1011201210203. The reversal of 1011201210197 is 7910121021101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858969361636 + 152231848561 = 926806^2 + 390169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011201210197 - 2²⁴ = 1011184432981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011204210197) 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, 505600605098 + 505600605099.

It is an arithmetic number, because the mean of its divisors is an integer number (505600605099).

Almost surely, 2^{1011201210197} is an apocalyptic number.

It is an amenable number.

1011201210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201210197 is an equidigital number, since it uses as much as digits as its factorization.

1011201210197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 26.

Adding to 1011201210197 its reverse (7910121021101), we get a palindrome (8921322231298).

The spelling of 1011201210197 in words is "one trillion, eleven billion, two hundred one million, two hundred ten thousand, one hundred ninety-seven".