201111019097 has 2 divisors, whose sum is σ = 201111019098. Its totient is φ = 201111019096.

The previous prime is 201111019051. The next prime is 201111019117. The reversal of 201111019097 is 790910111102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109626547801 + 91484471296 = 331099^2 + 302464^2 .

It is a cyclic number.

It is not a de Polignac number, because 201111019097 - 2¹⁸ = 201110756953 is a prime.

It is not a weakly prime, because it can be changed into another prime (201111019297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555509548 + 100555509549.

It is an arithmetic number, because the mean of its divisors is an integer number (100555509549).

Almost surely, 2^201111019097 is an apocalyptic number.

It is an amenable number.

201111019097 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111019097 is an equidigital number, since it uses as much as digits as its factorization.

201111019097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 32.

The spelling of 201111019097 in words is "two hundred one billion, one hundred eleven million, nineteen thousand, ninety-seven".