211111232112 has 120 divisors (see below), whose sum is σ = 661948875120. Its totient is φ = 62244080640.

The previous prime is 211111232093. The next prime is 211111232147. The reversal of 211111232112 is 211232111112.

It is a happy number.

211111232112 is a `hidden beast` number, since 211 + 111 + 232 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1742437 + ... + 1859652.

It is an arithmetic number, because the mean of its divisors is an integer number (5516240626).

Almost surely, 2^211111232112 is an apocalyptic number.

211111232112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211111232112 is an abundant number, since it is smaller than the sum of its proper divisors (450837643008).

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

211111232112 is a wasteful number, since it uses less digits than its factorization.

211111232112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602151 (or 3602142 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 211111232112 its reverse (211232111112), we get a palindrome (422343343224).

The spelling of 211111232112 in words is "two hundred eleven billion, one hundred eleven million, two hundred thirty-two thousand, one hundred twelve".