11001111197 has 2 divisors, whose sum is σ = 11001111198. Its totient is φ = 11001111196.

The previous prime is 11001111181. The next prime is 11001111203. The reversal of 11001111197 is 79111110011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10931538916 + 69572281 = 104554^2 + 8341^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001111197 - 2⁴ = 11001111181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001111127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500555598 + 5500555599.

It is an arithmetic number, because the mean of its divisors is an integer number (5500555599).

Almost surely, 2^11001111197 is an apocalyptic number.

It is an amenable number.

11001111197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001111197 is an equidigital number, since it uses as much as digits as its factorization.

11001111197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 23.

The spelling of 11001111197 in words is "eleven billion, one million, one hundred eleven thousand, one hundred ninety-seven".