212111111112 has 32 divisors (see below), whose sum is σ = 530403422400. Its totient is φ = 70686951104.

The previous prime is 212111111089. The next prime is 212111111123. The reversal of 212111111112 is 211111111212.

212111111112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212111111112² (a number of 23 digits) contains 22 as substring.

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 = 212111111091 and 212111111100.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 943428 + ... + 1146419.

It is an arithmetic number, because the mean of its divisors is an integer number (16575106950).

Almost surely, 2^212111111112 is an apocalyptic number.

It is an amenable number.

212111111112 is an abundant number, since it is smaller than the sum of its proper divisors (318292311288).

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

212111111112 is a wasteful number, since it uses less digits than its factorization.

212111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094085 (or 2094081 counting only the distinct ones).

The product of its digits is 8, while the sum is 15.

Adding to 212111111112 its reverse (211111111212), we get a palindrome (423222222324).

The spelling of 212111111112 in words is "two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".