13011321331012 has 48 divisors (see below), whose sum is σ = 23342877169920. Its totient is φ = 6343994587392.

The previous prime is 13011321331007. The next prime is 13011321331013. The reversal of 13011321331012 is 21013312311031.

It is not an unprimeable number, because it can be changed into a prime (13011321331013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32018928 + ... + 32422744.

It is an arithmetic number, because the mean of its divisors is an integer number (486309941040).

Almost surely, 2^{13011321331012} is an apocalyptic number.

It is an amenable number.

13011321331012 is a deficient number, since it is larger than the sum of its proper divisors (10331555838908).

13011321331012 is a wasteful number, since it uses less digits than its factorization.

13011321331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405100 (or 405098 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13011321331012 its reverse (21013312311031), we get a palindrome (34024633642043).

The spelling of 13011321331012 in words is "thirteen trillion, eleven billion, three hundred twenty-one million, three hundred thirty-one thousand, twelve".