12131231012 has 12 divisors (see below), whose sum is σ = 21230496000. Its totient is φ = 6065375016.

The previous prime is 12131231009. The next prime is 12131231081. The reversal of 12131231012 is 21013213121.

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, 101873 + ... + 186119.

It is an arithmetic number, because the mean of its divisors is an integer number (1769208000).

Almost surely, 2^12131231012 is an apocalyptic number.

It is an amenable number.

12131231012 is a deficient number, since it is larger than the sum of its proper divisors (9099264988).

12131231012 is a wasteful number, since it uses less digits than its factorization.

12131231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120250 (or 120248 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12131231012 its reverse (21013213121), we get a palindrome (33144444133).

The spelling of 12131231012 in words is "twelve billion, one hundred thirty-one million, two hundred thirty-one thousand, twelve".