13111033012 has 96 divisors (see below), whose sum is σ = 30443212800. Its totient is φ = 4783173120.

The previous prime is 13111033009. The next prime is 13111033021. The reversal of 13111033012 is 21033011131.

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 31 ways as a sum of consecutive naturals, for example, 1035673 + ... + 1048255.

It is an arithmetic number, because the mean of its divisors is an integer number (317116800).

Almost surely, 2^13111033012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13111033012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15221606400).

13111033012 is an abundant number, since it is smaller than the sum of its proper divisors (17332179788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111033012 is a wasteful number, since it uses less digits than its factorization.

13111033012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12821 (or 12819 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 13111033012 its reverse (21033011131), we get a palindrome (34144044143).

The spelling of 13111033012 in words is "thirteen billion, one hundred eleven million, thirty-three thousand, twelve".