11011112197 has 2 divisors, whose sum is σ = 11011112198. Its totient is φ = 11011112196.

The previous prime is 11011112183. The next prime is 11011112219. The reversal of 11011112197 is 79121111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9079421796 + 1931690401 = 95286^2 + 43951^2 .

It is an emirp because it is prime and its reverse (79121111011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011112197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011112117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505556098 + 5505556099.

It is an arithmetic number, because the mean of its divisors is an integer number (5505556099).

Almost surely, 2^11011112197 is an apocalyptic number.

It is an amenable number.

11011112197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011112197 is an equidigital number, since it uses as much as digits as its factorization.

11011112197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 25.

The spelling of 11011112197 in words is "eleven billion, eleven million, one hundred twelve thousand, one hundred ninety-seven".