111220211112 has 16 divisors (see below), whose sum is σ = 278050527840. Its totient is φ = 37073403696.

The previous prime is 111220211059. The next prime is 111220211131. The reversal of 111220211112 is 211112022111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111220211091 and 111220211100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317087708 + ... + 2317087755.

It is an arithmetic number, because the mean of its divisors is an integer number (17378157990).

Almost surely, 2^111220211112 is an apocalyptic number.

111220211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111220211112 is an abundant number, since it is smaller than the sum of its proper divisors (166830316728).

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

111220211112 is a wasteful number, since it uses less digits than its factorization.

111220211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634175472 (or 4634175468 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111220211112 its reverse (211112022111), we get a palindrome (322332233223).

The spelling of 111220211112 in words is "one hundred eleven billion, two hundred twenty million, two hundred eleven thousand, one hundred twelve".