2111155112 has 16 divisors (see below), whose sum is σ = 4318272000. Its totient is φ = 959615920.

The previous prime is 2111155099. The next prime is 2111155117. The reversal of 2111155112 is 2115511112.

It is not an unprimeable number, because it can be changed into a prime (2111155117) 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 in 3 ways as a sum of consecutive naturals, for example, 11995112 + ... + 11995287.

It is an arithmetic number, because the mean of its divisors is an integer number (269892000).

Almost surely, 2^2111155112 is an apocalyptic number.

2111155112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2111155112 is an abundant number, since it is smaller than the sum of its proper divisors (2207116888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111155112 is a wasteful number, since it uses less digits than its factorization.

2111155112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23990416 (or 23990412 counting only the distinct ones).

The product of its digits is 100, while the sum is 20.

The square root of 2111155112 is about 45947.3079951372. The cubic root of 2111155112 is about 1282.8426228621.

Adding to 2111155112 its reverse (2115511112), we get a palindrome (4226666224).

The spelling of 2111155112 in words is "two billion, one hundred eleven million, one hundred fifty-five thousand, one hundred twelve".