111211211112 has 16 divisors (see below), whose sum is σ = 278028027840. Its totient is φ = 37070403696.

The previous prime is 111211211101. The next prime is 111211211117. The reversal of 111211211112 is 211112112111.

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 = 111211211091 and 111211211100.

It is not an unprimeable number, because it can be changed into a prime (111211211117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316900208 + ... + 2316900255.

It is an arithmetic number, because the mean of its divisors is an integer number (17376751740).

Almost surely, 2^111211211112 is an apocalyptic number.

111211211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111211211112 is an abundant number, since it is smaller than the sum of its proper divisors (166816816728).

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

111211211112 is a wasteful number, since it uses less digits than its factorization.

111211211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633800472 (or 4633800468 counting only the distinct ones).

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

Adding to 111211211112 its reverse (211112112111), we get a palindrome (322323323223).

Subtracting 111211211112 from its reverse (211112112111), we obtain a palindrome (99900900999).

The spelling of 111211211112 in words is "one hundred eleven billion, two hundred eleven million, two hundred eleven thousand, one hundred twelve".