111111100112112 has 40 divisors (see below), whose sum is σ = 287079615515856. Its totient is φ = 37031535707136.

The previous prime is 111111100112107. The next prime is 111111100112147. The reversal of 111111100112112 is 211211001111111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111111100112091 and 111111100112100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171475243 + ... + 172121994.

Almost surely, 2^{111111100112112} is an apocalyptic number.

111111100112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111100112112 is an abundant number, since it is smaller than the sum of its proper divisors (175968515403744).

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

111111100112112 is a wasteful number, since it uses less digits than its factorization.

111111100112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343603985 (or 343603979 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111111100112112 its reverse (211211001111111), we get a palindrome (322322101223223).

The spelling of 111111100112112 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, one hundred twelve thousand, one hundred twelve".