111111011055 has 48 divisors (see below), whose sum is σ = 214571096064. Its totient is φ = 52725781440.

The previous prime is 111111011051. The next prime is 111111011057. The reversal of 111111011055 is 550110111111.

It is not a de Polignac number, because 111111011055 - 2² = 111111011051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111011051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2364679 + ... + 2411208.

It is an arithmetic number, because the mean of its divisors is an integer number (4470231168).

Almost surely, 2^111111011055 is an apocalyptic number.

111111011055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111111011055 is a deficient number, since it is larger than the sum of its proper divisors (103460085009).

111111011055 is a wasteful number, since it uses less digits than its factorization.

111111011055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775956 (or 4775953 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 18.

Adding to 111111011055 its reverse (550110111111), we get a palindrome (661221122166).

The spelling of 111111011055 in words is "one hundred eleven billion, one hundred eleven million, eleven thousand, fifty-five".