201111102097 has 2 divisors, whose sum is σ = 201111102098. Its totient is φ = 201111102096.

The previous prime is 201111102089. The next prime is 201111102121. The reversal of 201111102097 is 790201111102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148686588801 + 52424513296 = 385599^2 + 228964^2 .

It is a cyclic number.

It is not a de Polignac number, because 201111102097 - 2³ = 201111102089 is a prime.

It is not a weakly prime, because it can be changed into another prime (201111103097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555551048 + 100555551049.

It is an arithmetic number, because the mean of its divisors is an integer number (100555551049).

Almost surely, 2^201111102097 is an apocalyptic number.

It is an amenable number.

201111102097 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111102097 is an equidigital number, since it uses as much as digits as its factorization.

201111102097 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 25.

Adding to 201111102097 its reverse (790201111102), we get a palindrome (991312213199).

The spelling of 201111102097 in words is "two hundred one billion, one hundred eleven million, one hundred two thousand, ninety-seven".