1311122410111 has 4 divisors (see below), whose sum is σ = 1311128719992. Its totient is φ = 1311116100232.

The previous prime is 1311122410079. The next prime is 1311122410133. The reversal of 1311122410111 is 1110142211131.

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 1311122410111 - 2⁵ = 1311122410079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311122410151) 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, 2832256 + ... + 3262501.

It is an arithmetic number, because the mean of its divisors is an integer number (327782179998).

Almost surely, 2^{1311122410111} is an apocalyptic number.

1311122410111 is a deficient number, since it is larger than the sum of its proper divisors (6309881).

1311122410111 is an equidigital number, since it uses as much as digits as its factorization.

1311122410111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309880.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 1311122410111 its reverse (1110142211131), we get a palindrome (2421264621242).

The spelling of 1311122410111 in words is "one trillion, three hundred eleven billion, one hundred twenty-two million, four hundred ten thousand, one hundred eleven".