111221021111112 has 192 divisors, whose sum is σ = 359161208040960. Its totient is φ = 30697538918400.

The previous prime is 111221021111063. The next prime is 111221021111141. The reversal of 111221021111112 is 211111120122111.

111221021111112 is a `hidden beast` number, since 111 + 221 + 0 + 211 + 11 + 112 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132818463 + ... + 133653230.

It is an arithmetic number, because the mean of its divisors is an integer number (1870631291880).

Almost surely, 2^{111221021111112} is an apocalyptic number.

111221021111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111221021111112 is an abundant number, since it is smaller than the sum of its proper divisors (247940186929848).

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

111221021111112 is a wasteful number, since it uses less digits than its factorization.

111221021111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266471764 (or 266471757 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 111221021111112 its reverse (211111120122111), we get a palindrome (322332141233223).

The spelling of 111221021111112 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty-one million, one hundred eleven thousand, one hundred twelve".