11313111121321 has 12 divisors (see below), whose sum is σ = 11581124223060. Its totient is φ = 11051153285120.

The previous prime is 11313111121309. The next prime is 11313111121391. The reversal of 11313111121321 is 12312111131311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6056821245721 + 5256289875600 = 2461061^2 + 2292660^2 .

It is not a de Polignac number, because 11313111121321 - 2⁹ = 11313111120809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11313111121292 and 11313111121301.

It is not an unprimeable number, because it can be changed into a prime (11313111121391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3764056 + ... + 6065833.

It is an arithmetic number, because the mean of its divisors is an integer number (965093685255).

Almost surely, 2^{11313111121321} is an apocalyptic number.

It is an amenable number.

11313111121321 is a deficient number, since it is larger than the sum of its proper divisors (268013101739).

11313111121321 is an frugal number, since it uses more digits than its factorization.

11313111121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830504 (or 9830457 counting only the distinct ones).

The product of its digits is 108, while the sum is 22.

Adding to 11313111121321 its reverse (12312111131311), we get a palindrome (23625222252632).

The spelling of 11313111121321 in words is "eleven trillion, three hundred thirteen billion, one hundred eleven million, one hundred twenty-one thousand, three hundred twenty-one".