13111201011 has 4 divisors (see below), whose sum is σ = 17481601352. Its totient is φ = 8740800672.

The previous prime is 13111201001. The next prime is 13111201069. The reversal of 13111201011 is 11010211131.

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

It is not a de Polignac number, because 13111201011 - 2⁵ = 13111200979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111201001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2185200166 + ... + 2185200171.

It is an arithmetic number, because the mean of its divisors is an integer number (4370400338).

Almost surely, 2^13111201011 is an apocalyptic number.

13111201011 is a deficient number, since it is larger than the sum of its proper divisors (4370400341).

13111201011 is an equidigital number, since it uses as much as digits as its factorization.

13111201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370400340.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 13111201011 its reverse (11010211131), we get a palindrome (24121412142).

It can be divided in two parts, 1311120 and 1011, that added together give a palindrome (1312131).

The spelling of 13111201011 in words is "thirteen billion, one hundred eleven million, two hundred one thousand, eleven".