11111213112 has 16 divisors (see below), whose sum is σ = 27778032840. Its totient is φ = 3703737696.

The previous prime is 11111213063. The next prime is 11111213117. The reversal of 11111213112 is 21131211111.

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 = 11111213091 and 11111213100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111213117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231483583 + ... + 231483630.

Almost surely, 2^11111213112 is an apocalyptic number.

11111213112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111213112 is an abundant number, since it is smaller than the sum of its proper divisors (16666819728).

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

11111213112 is a wasteful number, since it uses less digits than its factorization.

11111213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462967222 (or 462967218 counting only the distinct ones).

The product of its digits is 12, while the sum is 15.

Adding to 11111213112 its reverse (21131211111), we get a palindrome (32242424223).

The spelling of 11111213112 in words is "eleven billion, one hundred eleven million, two hundred thirteen thousand, one hundred twelve".