111668899111 has 16 divisors (see below), whose sum is σ = 139741148160. Its totient is φ = 86691235680.

The previous prime is 111668899093. The next prime is 111668899123. The reversal of 111668899111 is 111998866111.

It is a happy number.

It is not a de Polignac number, because 111668899111 - 2⁵ = 111668899079 is a prime.

111668899111 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111668899711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2674911 + ... + 2716336.

It is an arithmetic number, because the mean of its divisors is an integer number (8733821760).

Almost surely, 2^111668899111 is an apocalyptic number.

111668899111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111668899111 is a deficient number, since it is larger than the sum of its proper divisors (28072249049).

111668899111 is a wasteful number, since it uses less digits than its factorization.

111668899111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391534.

The product of its digits is 186624, while the sum is 52.

The spelling of 111668899111 in words is "one hundred eleven billion, six hundred sixty-eight million, eight hundred ninety-nine thousand, one hundred eleven".