111213120112 has 20 divisors (see below), whose sum is σ = 215481265360. Its totient is φ = 55605051648.

The previous prime is 111213120103. The next prime is 111213120163. The reversal of 111213120112 is 211021312111.

It is a happy number.

It is a super-2 number, since 2×111213120112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 735064 + ... + 873352.

It is an arithmetic number, because the mean of its divisors is an integer number (10774063268).

Almost surely, 2^111213120112 is an apocalyptic number.

It is an amenable number.

111213120112 is a deficient number, since it is larger than the sum of its proper divisors (104268145248).

111213120112 is a wasteful number, since it uses less digits than its factorization.

111213120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188560 (or 188554 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111213120112 its reverse (211021312111), we get a palindrome (322234432223).

The spelling of 111213120112 in words is "one hundred eleven billion, two hundred thirteen million, one hundred twenty thousand, one hundred twelve".