13111101001111 has 4 divisors (see below), whose sum is σ = 13189610588112. Its totient is φ = 13032591414112.

The previous prime is 13111101001091. The next prime is 13111101001157. The reversal of 13111101001111 is 11110010111131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13111101001111 - 2¹⁷ = 13111100870039 is a prime.

It is a super-2 number, since 2×13111101001111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111101001091 and 13111101001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111101001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39254793250 + ... + 39254793583.

It is an arithmetic number, because the mean of its divisors is an integer number (3297402647028).

Almost surely, 2^{13111101001111} is an apocalyptic number.

13111101001111 is a deficient number, since it is larger than the sum of its proper divisors (78509587001).

13111101001111 is an equidigital number, since it uses as much as digits as its factorization.

13111101001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78509587000.

The product of its (nonzero) digits is 3, while the sum is 13.

Adding to 13111101001111 its reverse (11110010111131), we get a palindrome (24221111112242).

The spelling of 13111101001111 in words is "thirteen trillion, one hundred eleven billion, one hundred one million, one thousand, one hundred eleven".