13011011111 has 8 divisors (see below), whose sum is σ = 15173191200. Its totient is φ = 11152294944.

The previous prime is 13011011093. The next prime is 13011011119. The reversal of 13011011111 is 11111011031.

It is a de Polignac number, because none of the positive numbers 2^k-13011011111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13011011092 and 13011011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011011119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18966146 + ... + 18966831.

It is an arithmetic number, because the mean of its divisors is an integer number (1896648900).

Almost surely, 2^13011011111 is an apocalyptic number.

13011011111 is a deficient number, since it is larger than the sum of its proper divisors (2162180089).

13011011111 is an frugal number, since it uses more digits than its factorization.

13011011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37932998 (or 37932984 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 11.

Adding to 13011011111 its reverse (11111011031), we get a palindrome (24122022142).

The spelling of 13011011111 in words is "thirteen billion, eleven million, eleven thousand, one hundred eleven".