13231222012 has 24 divisors (see below), whose sum is σ = 23756578272. Its totient is φ = 6444134400.

The previous prime is 13231222007. The next prime is 13231222063. The reversal of 13231222012 is 21022213231.

13231222012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 42193 + ... + 168055.

It is an arithmetic number, because the mean of its divisors is an integer number (989857428).

Almost surely, 2^13231222012 is an apocalyptic number.

It is an amenable number.

13231222012 is a deficient number, since it is larger than the sum of its proper divisors (10525356260).

13231222012 is a wasteful number, since it uses less digits than its factorization.

13231222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126549 (or 126547 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13231222012 its reverse (21022213231), we get a palindrome (34253435243).

The spelling of 13231222012 in words is "thirteen billion, two hundred thirty-one million, two hundred twenty-two thousand, twelve".