11331131311121 has 4 divisors (see below), whose sum is σ = 11331244551744. Its totient is φ = 11331018070500.

The previous prime is 11331131311081. The next prime is 11331131311207. The reversal of 11331131311121 is 12111313113311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11331131311121 - 2⁶ = 11331131311057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331131319121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56470085 + ... + 56670386.

It is an arithmetic number, because the mean of its divisors is an integer number (2832811137936).

Almost surely, 2^{11331131311121} is an apocalyptic number.

It is an amenable number.

11331131311121 is a deficient number, since it is larger than the sum of its proper divisors (113240623).

11331131311121 is a wasteful number, since it uses less digits than its factorization.

11331131311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113240622.

The product of its digits is 162, while the sum is 23.

Adding to 11331131311121 its reverse (12111313113311), we get a palindrome (23442444424432).

The spelling of 11331131311121 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred eleven thousand, one hundred twenty-one".