2112311555 has 8 divisors (see below), whose sum is σ = 2582600112. Its totient is φ = 1657965088.

The previous prime is 2112311549. The next prime is 2112311587. The reversal of 2112311555 is 5551132112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112311555 - 2¹⁰ = 2112310531 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3985229 + ... + 3985758.

It is an arithmetic number, because the mean of its divisors is an integer number (322825014).

Almost surely, 2^2112311555 is an apocalyptic number.

2112311555 is a deficient number, since it is larger than the sum of its proper divisors (470288557).

2112311555 is an equidigital number, since it uses as much as digits as its factorization.

2112311555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971045.

The product of its digits is 1500, while the sum is 26.

The square root of 2112311555 is about 45959.8907200616. The cubic root of 2112311555 is about 1283.0768174922.

Adding to 2112311555 its reverse (5551132112), we get a palindrome (7663443667).

The spelling of 2112311555 in words is "two billion, one hundred twelve million, three hundred eleven thousand, five hundred fifty-five".