13011123111 has 32 divisors (see below), whose sum is σ = 21001098240. Its totient is φ = 6994791936.

The previous prime is 13011123071. The next prime is 13011123143. The reversal of 13011123111 is 11132111031.

It is not a de Polignac number, because 13011123111 - 2¹⁴ = 13011106727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011121111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1147110 + ... + 1158396.

It is an arithmetic number, because the mean of its divisors is an integer number (656284320).

Almost surely, 2^13011123111 is an apocalyptic number.

13011123111 is a deficient number, since it is larger than the sum of its proper divisors (7989975129).

13011123111 is a wasteful number, since it uses less digits than its factorization.

13011123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14543.

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

Adding to 13011123111 its reverse (11132111031), we get a palindrome (24143234142).

The spelling of 13011123111 in words is "thirteen billion, eleven million, one hundred twenty-three thousand, one hundred eleven".