13112122105 has 24 divisors (see below), whose sum is σ = 16015740552. Its totient is φ = 10305453312.

The previous prime is 13112122073. The next prime is 13112122109. The reversal of 13112122105 is 50122121131.

It can be written as a sum of positive squares in 4 ways, for example, as 93083904 + 13019038201 = 9648^2 + 114101^2 .

It is not a de Polignac number, because 13112122105 - 2⁵ = 13112122073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13112122109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13758309 + ... + 13759261.

It is an arithmetic number, because the mean of its divisors is an integer number (667322523).

Almost surely, 2^13112122105 is an apocalyptic number.

It is an amenable number.

13112122105 is a deficient number, since it is larger than the sum of its proper divisors (2903618447).

13112122105 is an frugal number, since it uses more digits than its factorization.

13112122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 13112122105 its reverse (50122121131), we get a palindrome (63234243236).

The spelling of 13112122105 in words is "thirteen billion, one hundred twelve million, one hundred twenty-two thousand, one hundred five".