11311221232 has 20 divisors (see below), whose sum is σ = 21924228456. Its totient is φ = 5653355840.

The previous prime is 11311221203. The next prime is 11311221241. The reversal of 11311221232 is 23212211311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99163 + ... + 180154.

Almost surely, 2^11311221232 is an apocalyptic number.

It is an amenable number.

11311221232 is a deficient number, since it is larger than the sum of its proper divisors (10613007224).

11311221232 is a wasteful number, since it uses less digits than its factorization.

11311221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281856 (or 281850 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 11311221232 its reverse (23212211311), we get a palindrome (34523432543).

The spelling of 11311221232 in words is "eleven billion, three hundred eleven million, two hundred twenty-one thousand, two hundred thirty-two".