13111220312 has 16 divisors (see below), whose sum is σ = 24710916840. Its totient is φ = 6521642496.

The previous prime is 13111220279. The next prime is 13111220323. The reversal of 13111220312 is 21302211131.

13111220312 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 3 ways as a sum of consecutive naturals, for example, 4244318 + ... + 4247405.

Almost surely, 2^13111220312 is an apocalyptic number.

It is an amenable number.

13111220312 is a deficient number, since it is larger than the sum of its proper divisors (11599696528).

13111220312 is a wasteful number, since it uses less digits than its factorization.

13111220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8491922 (or 8491918 counting only the distinct ones).

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

Adding to 13111220312 its reverse (21302211131), we get a palindrome (34413431443).

The spelling of 13111220312 in words is "thirteen billion, one hundred eleven million, two hundred twenty thousand, three hundred twelve".