13111220320312 has 64 divisors (see below), whose sum is σ = 26940729016800. Its totient is φ = 5954235248640.

The previous prime is 13111220320259. The next prime is 13111220320333. The reversal of 13111220320312 is 21302302211131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7026387 + ... + 8694397.

Almost surely, 2^{13111220320312} is an apocalyptic number.

It is an amenable number.

13111220320312 is an abundant number, since it is smaller than the sum of its proper divisors (13829508696488).

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

13111220320312 is a wasteful number, since it uses less digits than its factorization.

13111220320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670056 (or 1670052 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13111220320312 its reverse (21302302211131), we get a palindrome (34413522531443).

The spelling of 13111220320312 in words is "thirteen trillion, one hundred eleven billion, two hundred twenty million, three hundred twenty thousand, three hundred twelve".