1111211111112 has 64 divisors (see below), whose sum is σ = 2831707598400. Its totient is φ = 363281399040.

The previous prime is 1111211111089. The next prime is 1111211111149. The reversal of 1111211111112 is 2111111121111.

It is a happy number.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1111211111091 and 1111211111100.

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, 585687 + ... + 1601702.

It is an arithmetic number, because the mean of its divisors is an integer number (44245431225).

Almost surely, 2^{1111211111112} is an apocalyptic number.

1111211111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111211111112 is an abundant number, since it is smaller than the sum of its proper divisors (1720496487288).

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

1111211111112 is a wasteful number, since it uses less digits than its factorization.

1111211111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187806 (or 2187802 counting only the distinct ones).

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

Adding to 1111211111112 its reverse (2111111121111), we get a palindrome (3222322232223).

Subtracting 1111211111112 from its reverse (2111111121111), we obtain a palindrome (999900009999).

It can be divided in two parts, 1111 and 211111112, that multiplied together give a palindrome (234544445432).

The spelling of 1111211111112 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred eleven thousand, one hundred twelve".