13111320111 has 16 divisors (see below), whose sum is σ = 17957628384. Its totient is φ = 8503035264.

The previous prime is 13111320059. The next prime is 13111320119. The reversal of 13111320111 is 11102311131.

It is not a de Polignac number, because 13111320111 - 2⁷ = 13111319983 is a prime.

It is a super-2 number, since 2×13111320111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111320119) 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, 956341 + ... + 969953.

It is an arithmetic number, because the mean of its divisors is an integer number (1122351774).

Almost surely, 2^13111320111 is an apocalyptic number.

13111320111 is a deficient number, since it is larger than the sum of its proper divisors (4846308273).

13111320111 is a wasteful number, since it uses less digits than its factorization.

13111320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330.

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

Adding to 13111320111 its reverse (11102311131), we get a palindrome (24213631242).

The spelling of 13111320111 in words is "thirteen billion, one hundred eleven million, three hundred twenty thousand, one hundred eleven".