13111312120 has 64 divisors (see below), whose sum is σ = 29704125600. Its totient is φ = 5208430080.

The previous prime is 13111312079. The next prime is 13111312129. The reversal of 13111312120 is 2121311131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13111312094 and 13111312103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111312129) 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, 4699686 + ... + 4702474.

Almost surely, 2^13111312120 is an apocalyptic number.

13111312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111312120 is an abundant number, since it is smaller than the sum of its proper divisors (16592813480).

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

13111312120 is a wasteful number, since it uses less digits than its factorization.

13111312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568 (or 3564 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13111312120 its reverse (2121311131), we get a palindrome (15232623251).

The spelling of 13111312120 in words is "thirteen billion, one hundred eleven million, three hundred twelve thousand, one hundred twenty".