116611111 has 2 divisors, whose sum is σ = 116611112. Its totient is φ = 116611110.

The previous prime is 116611097. The next prime is 116611129. The reversal of 116611111 is 111116611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116611111 is a prime.

116611111 is a modest number, since divided by 11111 gives 1166 as remainder.

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 (116611511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58305555 + 58305556.

It is an arithmetic number, because the mean of its divisors is an integer number (58305556).

Almost surely, 2^116611111 is an apocalyptic number.

116611111 is a deficient number, since it is larger than the sum of its proper divisors (1).

116611111 is an equidigital number, since it uses as much as digits as its factorization.

116611111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 19.

The square root of 116611111 is about 10798.6624634720. The cubic root of 116611111 is about 488.5548297909.

Adding to 116611111 its reverse (111116611), we get a palindrome (227727722).

The spelling of 116611111 in words is "one hundred sixteen million, six hundred eleven thousand, one hundred eleven".