11113131212 has 12 divisors (see below), whose sum is σ = 19451029416. Its totient is φ = 5555694240.

The previous prime is 11113131199. The next prime is 11113131299. The reversal of 11113131212 is 21213131111.

11113131212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188714 + ... + 240497.

It is an arithmetic number, because the mean of its divisors is an integer number (1620919118).

Almost surely, 2^11113131212 is an apocalyptic number.

It is an amenable number.

11113131212 is a deficient number, since it is larger than the sum of its proper divisors (8337898204).

11113131212 is a wasteful number, since it uses less digits than its factorization.

11113131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435688 (or 435686 counting only the distinct ones).

The product of its digits is 36, while the sum is 17.

Adding to 11113131212 its reverse (21213131111), we get a palindrome (32326262323).

The spelling of 11113131212 in words is "eleven billion, one hundred thirteen million, one hundred thirty-one thousand, two hundred twelve".