11331121320311 has 4 divisors (see below), whose sum is σ = 12202746037272. Its totient is φ = 10459496603352.

The previous prime is 11331121320283. The next prime is 11331121320317. The reversal of 11331121320311 is 11302312113311.

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 11331121320311 - 2¹⁸ = 11331121058167 is a prime.

It is a super-2 number, since 2×11331121320311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331121320317) 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, 435812358461 + ... + 435812358486.

It is an arithmetic number, because the mean of its divisors is an integer number (3050686509318).

Almost surely, 2^{11331121320311} is an apocalyptic number.

11331121320311 is a deficient number, since it is larger than the sum of its proper divisors (871624716961).

11331121320311 is an equidigital number, since it uses as much as digits as its factorization.

11331121320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871624716960.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 11331121320311 its reverse (11302312113311), we get a palindrome (22633433433622).

The spelling of 11331121320311 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-one million, three hundred twenty thousand, three hundred eleven".