201211101197 has 2 divisors, whose sum is σ = 201211101198. Its totient is φ = 201211101196.

The previous prime is 201211101191. The next prime is 201211101229. The reversal of 201211101197 is 791101112102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121833110116 + 79377991081 = 349046^2 + 281741^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211101197 - 2²⁸ = 200942665741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201211101191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605550598 + 100605550599.

It is an arithmetic number, because the mean of its divisors is an integer number (100605550599).

Almost surely, 2^201211101197 is an apocalyptic number.

It is an amenable number.

201211101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211101197 is an equidigital number, since it uses as much as digits as its factorization.

201211101197 is an evil number, because the sum of its binary digits is even.

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

Adding to 201211101197 its reverse (791101112102), we get a palindrome (992312213299).

The spelling of 201211101197 in words is "two hundred one billion, two hundred eleven million, one hundred one thousand, one hundred ninety-seven".