2111312112 has 160 divisors (see below), whose sum is σ = 6789565440. Its totient is φ = 550471680.

The previous prime is 2111312087. The next prime is 2111312153. The reversal of 2111312112 is 2112131112.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2111312091 and 2111312100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386037 + ... + 391467.

It is an arithmetic number, because the mean of its divisors is an integer number (42434784).

Almost surely, 2^2111312112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3394782720).

2111312112 is an abundant number, since it is smaller than the sum of its proper divisors (4678253328).

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

2111312112 is a wasteful number, since it uses less digits than its factorization.

2111312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551 (or 5545 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 2111312112 is about 45949.0164421394. The cubic root of 2111312112 is about 1282.8744224045.

Adding to 2111312112 its reverse (2112131112), we get a palindrome (4223443224).

The spelling of 2111312112 in words is "two billion, one hundred eleven million, three hundred twelve thousand, one hundred twelve".