111121221112 has 32 divisors (see below), whose sum is σ = 227516209200. Its totient is φ = 50460134400.

The previous prime is 111121221007. The next prime is 111121221161. The reversal of 111121221112 is 211122121111.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 528537 + ... + 708232.

Almost surely, 2^111121221112 is an apocalyptic number.

It is an amenable number.

111121221112 is an abundant number, since it is smaller than the sum of its proper divisors (116394988088).

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

111121221112 is a wasteful number, since it uses less digits than its factorization.

111121221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237807 (or 1237803 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

Adding to 111121221112 its reverse (211122121111), we get a palindrome (322243342223).

It can be divided in two parts, 111121 and 221112, that added together give a palindrome (332233).

The spelling of 111121221112 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".