13111113012 has 24 divisors (see below), whose sum is σ = 30603834912. Its totient is φ = 4368765600.

The previous prime is 13111113007. The next prime is 13111113047. The reversal of 13111113012 is 21031111131.

It is a junction number, because it is equal to n+sod(n) for n = 13111112982 and 13111113000.

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 7 ways as a sum of consecutive naturals, for example, 166414 + ... + 232197.

It is an arithmetic number, because the mean of its divisors is an integer number (1275159788).

Almost surely, 2^13111113012 is an apocalyptic number.

13111113012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13111113012 is an abundant number, since it is smaller than the sum of its proper divisors (17492721900).

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

13111113012 is a wasteful number, since it uses less digits than its factorization.

13111113012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401359 (or 401357 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 13111113012 its reverse (21031111131), we get a palindrome (34142224143).

The spelling of 13111113012 in words is "thirteen billion, one hundred eleven million, one hundred thirteen thousand, twelve".