111211010112 has 112 divisors (see below), whose sum is σ = 302724555840. Its totient is φ = 36005640192.

The previous prime is 111211010089. The next prime is 111211010143. The reversal of 111211010112 is 211010112111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4156714 + ... + 4183382.

It is an arithmetic number, because the mean of its divisors is an integer number (2702897820).

Almost surely, 2^111211010112 is an apocalyptic number.

111211010112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111211010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151362277920).

111211010112 is an abundant number, since it is smaller than the sum of its proper divisors (191513545728).

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

111211010112 is a wasteful number, since it uses less digits than its factorization.

111211010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27308 (or 27298 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111211010112 its reverse (211010112111), we get a palindrome (322221122223).

It can be divided in two parts, 111 and 211010112, that multiplied together give a palindrome (23422122432).

The spelling of 111211010112 in words is "one hundred eleven billion, two hundred eleven million, ten thousand, one hundred twelve".