11131322321 has 8 divisors (see below), whose sum is σ = 12730242240. Its totient is φ = 9534585168.

The previous prime is 11131322317. The next prime is 11131322327. The reversal of 11131322321 is 12322313111.

It is a happy number.

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 11131322321 - 2² = 11131322317 is a prime.

It is a super-2 number, since 2×11131322321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11131322293 and 11131322302.

It is not an unprimeable number, because it can be changed into a prime (11131322327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534746 + ... + 555171.

It is an arithmetic number, because the mean of its divisors is an integer number (1591280280).

Almost surely, 2^11131322321 is an apocalyptic number.

It is an amenable number.

11131322321 is a deficient number, since it is larger than the sum of its proper divisors (1598919919).

11131322321 is a wasteful number, since it uses less digits than its factorization.

11131322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091383.

The product of its digits is 216, while the sum is 20.

Adding to 11131322321 its reverse (12322313111), we get a palindrome (23453635432).

The spelling of 11131322321 in words is "eleven billion, one hundred thirty-one million, three hundred twenty-two thousand, three hundred twenty-one".