12111113311 has 8 divisors (see below), whose sum is σ = 13214202624. Its totient is φ = 11008370520.

The previous prime is 12111113309. The next prime is 12111113317. The reversal of 12111113311 is 11331111121.

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

It is a cyclic number.

It is not a de Polignac number, because 12111113311 - 2¹ = 12111113309 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 (12111113317) 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 7 ways as a sum of consecutive naturals, for example, 10645 + ... + 155998.

It is an arithmetic number, because the mean of its divisors is an integer number (1651775328).

Almost surely, 2^12111113311 is an apocalyptic number.

12111113311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111113311 is a deficient number, since it is larger than the sum of its proper divisors (1103089313).

12111113311 is a wasteful number, since it uses less digits than its factorization.

12111113311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173261.

The product of its digits is 18, while the sum is 16.

Adding to 12111113311 its reverse (11331111121), we get a palindrome (23442224432).

The spelling of 12111113311 in words is "twelve billion, one hundred eleven million, one hundred thirteen thousand, three hundred eleven".