13112320111 has 16 divisors (see below), whose sum is σ = 14684237568. Its totient is φ = 11605507200.

The previous prime is 13112320061. The next prime is 13112320127. The reversal of 13112320111 is 11102321131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13112320111 - 2¹⁵ = 13112287343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112320211) 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, 102535 + ... + 191671.

It is an arithmetic number, because the mean of its divisors is an integer number (917764848).

Almost surely, 2^13112320111 is an apocalyptic number.

13112320111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13112320111 is a deficient number, since it is larger than the sum of its proper divisors (1571917457).

13112320111 is a wasteful number, since it uses less digits than its factorization.

13112320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89502.

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

Adding to 13112320111 its reverse (11102321131), we get a palindrome (24214641242).

The spelling of 13112320111 in words is "thirteen billion, one hundred twelve million, three hundred twenty thousand, one hundred eleven".