11101001291 has 2 divisors, whose sum is σ = 11101001292. Its totient is φ = 11101001290.

The previous prime is 11101001287. The next prime is 11101001297. The reversal of 11101001291 is 19210010111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19210010111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11101001291 - 2² = 11101001287 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11101001297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550500645 + 5550500646.

It is an arithmetic number, because the mean of its divisors is an integer number (5550500646).

Almost surely, 2^11101001291 is an apocalyptic number.

11101001291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101001291 is an equidigital number, since it uses as much as digits as its factorization.

11101001291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 11101001291 in words is "eleven billion, one hundred one million, one thousand, two hundred ninety-one".