11131233212 has 48 divisors (see below), whose sum is σ = 22082457600. Its totient is φ = 4863149760.

The previous prime is 11131233167. The next prime is 11131233221. The reversal of 11131233212 is 21233213111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264989 + ... + 304107.

It is an arithmetic number, because the mean of its divisors is an integer number (460051200).

Almost surely, 2^11131233212 is an apocalyptic number.

It is an amenable number.

11131233212 is a deficient number, since it is larger than the sum of its proper divisors (10951224388).

11131233212 is a wasteful number, since it uses less digits than its factorization.

11131233212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39386 (or 39384 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 11131233212 its reverse (21233213111), we get a palindrome (32364446323).

The spelling of 11131233212 in words is "eleven billion, one hundred thirty-one million, two hundred thirty-three thousand, two hundred twelve".