11117771111 has 2 divisors, whose sum is σ = 11117771112. Its totient is φ = 11117771110.

The previous prime is 11117771099. The next prime is 11117771113.

11117771111 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 11117771111 - 2¹⁸ = 11117508967 is a prime.

Together with 11117771113, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11117771113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5558885555 + 5558885556.

It is an arithmetic number, because the mean of its divisors is an integer number (5558885556).

Almost surely, 2^11117771111 is an apocalyptic number.

11117771111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11117771111 is an equidigital number, since it uses as much as digits as its factorization.

11117771111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 343, while the sum is 29.

The spelling of 11117771111 in words is "eleven billion, one hundred seventeen million, seven hundred seventy-one thousand, one hundred eleven".