12111313311111 has 8 divisors (see below), whose sum is σ = 18455334569344. Its totient is φ = 6920750463480.

The previous prime is 12111313311061. The next prime is 12111313311127. The reversal of 12111313311111 is 11111331311121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12111313311111 - 2³⁵ = 12076953572743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 576729205291 = 12111313311111 / (1 + 2 + 1 + 1 + 1 + 3 + 1 + 3 + 3 + 1 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111313311161) 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, 288364602625 + ... + 288364602666.

It is an arithmetic number, because the mean of its divisors is an integer number (2306916821168).

Almost surely, 2^{12111313311111} is an apocalyptic number.

12111313311111 is a deficient number, since it is larger than the sum of its proper divisors (6344021258233).

12111313311111 is an equidigital number, since it uses as much as digits as its factorization.

12111313311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576729205301.

The product of its digits is 54, while the sum is 21.

Adding to 12111313311111 its reverse (11111331311121), we get a palindrome (23222644622232).

The spelling of 12111313311111 in words is "twelve trillion, one hundred eleven billion, three hundred thirteen million, three hundred eleven thousand, one hundred eleven".