111001001112 has 48 divisors (see below), whose sum is σ = 310994190000. Its totient is φ = 35724459456.

The previous prime is 111001001081. The next prime is 111001001117. The reversal of 111001001112 is 211100100111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111001001094 and 111001001103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001001117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26578612 + ... + 26582787.

It is an arithmetic number, because the mean of its divisors is an integer number (6479045625).

Almost surely, 2^111001001112 is an apocalyptic number.

111001001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111001001112 is an abundant number, since it is smaller than the sum of its proper divisors (199993188888).

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

111001001112 is a wasteful number, since it uses less digits than its factorization.

111001001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53161440 (or 53161433 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111001001112 its reverse (211100100111), we get a palindrome (322101101223).

It can be divided in two parts, 11100100111 and 2, that multiplied together give a palindrome (22200200222).

The spelling of 111001001112 in words is "one hundred eleven billion, one million, one thousand, one hundred twelve".