111221011112 has 64 divisors (see below), whose sum is σ = 217149672960. Its totient is φ = 53346758400.

The previous prime is 111221011049. The next prime is 111221011127. The reversal of 111221011112 is 211110122111.

It is a super-2 number, since 2×111221011112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48503438 + ... + 48505730.

It is an arithmetic number, because the mean of its divisors is an integer number (3392963640).

Almost surely, 2^111221011112 is an apocalyptic number.

It is an amenable number.

111221011112 is a deficient number, since it is larger than the sum of its proper divisors (105928661848).

111221011112 is a wasteful number, since it uses less digits than its factorization.

111221011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111221011112 its reverse (211110122111), we get a palindrome (322331133223).

The spelling of 111221011112 in words is "one hundred eleven billion, two hundred twenty-one million, eleven thousand, one hundred twelve".