211111211112 has 64 divisors (see below), whose sum is σ = 570713713920. Its totient is φ = 64821792768.

The previous prime is 211111211093. The next prime is 211111211161. The reversal of 211111211112 is 211112111112.

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 = 211111211091 and 211111211100.

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 15 ways as a sum of consecutive naturals, for example, 5485393 + ... + 5523744.

It is an arithmetic number, because the mean of its divisors is an integer number (8917401780).

Almost surely, 2^211111211112 is an apocalyptic number.

It is an amenable number.

211111211112 is an abundant number, since it is smaller than the sum of its proper divisors (359602502808).

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

211111211112 is a wasteful number, since it uses less digits than its factorization.

211111211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009210 (or 11009206 counting only the distinct ones).

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

Adding to 211111211112 its reverse (211112111112), we get a palindrome (422223322224).

The spelling of 211111211112 in words is "two hundred eleven billion, one hundred eleven million, two hundred eleven thousand, one hundred twelve".