13012110311111 has 4 divisors (see below), whose sum is σ = 13026269300400. Its totient is φ = 12997951321824.

The previous prime is 13012110311063. The next prime is 13012110311113. The reversal of 13012110311111 is 11111301121031.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13012110311111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13012110311111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012110311113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7079493266 + ... + 7079495103.

It is an arithmetic number, because the mean of its divisors is an integer number (3256567325100).

Almost surely, 2^{13012110311111} is an apocalyptic number.

13012110311111 is a deficient number, since it is larger than the sum of its proper divisors (14158989289).

13012110311111 is an equidigital number, since it uses as much as digits as its factorization.

13012110311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14158989288.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 13012110311111 its reverse (11111301121031), we get a palindrome (24123411432142).

The spelling of 13012110311111 in words is "thirteen trillion, twelve billion, one hundred ten million, three hundred eleven thousand, one hundred eleven".