18133212113311 has 4 divisors (see below), whose sum is σ = 18133220630512. Its totient is φ = 18133203596112.

The previous prime is 18133212113293. The next prime is 18133212113351. The reversal of 18133212113311 is 11331121233181.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18133212113311 - 2⁵ = 18133212113279 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 (18133212113351) 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, 2054875 + ... + 6363091.

It is an arithmetic number, because the mean of its divisors is an integer number (4533305157628).

Almost surely, 2^{18133212113311} is an apocalyptic number.

18133212113311 is a deficient number, since it is larger than the sum of its proper divisors (8517201).

18133212113311 is an equidigital number, since it uses as much as digits as its factorization.

18133212113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8517200.

The product of its digits is 2592, while the sum is 31.

Adding to 18133212113311 its reverse (11331121233181), we get a palindrome (29464333346492).

The spelling of 18133212113311 in words is "eighteen trillion, one hundred thirty-three billion, two hundred twelve million, one hundred thirteen thousand, three hundred eleven".