11331131212 has 12 divisors (see below), whose sum is σ = 19830230280. Its totient is φ = 5665351136.

The previous prime is 11331131167. The next prime is 11331131233. The reversal of 11331131212 is 21213113311.

11331131212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11331131212.

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, 158463 + ... + 218569.

It is an arithmetic number, because the mean of its divisors is an integer number (1652519190).

Almost surely, 2^11331131212 is an apocalyptic number.

It is an amenable number.

11331131212 is a deficient number, since it is larger than the sum of its proper divisors (8499099068).

11331131212 is a wasteful number, since it uses less digits than its factorization.

11331131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107240 (or 107238 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

Adding to 11331131212 its reverse (21213113311), we get a palindrome (32544244523).

The spelling of 11331131212 in words is "eleven billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred twelve".