11132312321 has 4 divisors (see below), whose sum is σ = 11988644052. Its totient is φ = 10275980592.

The previous prime is 11132312311. The next prime is 11132312353. The reversal of 11132312321 is 12321323111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12321323111 = 2729 ⋅4514959.

It can be written as a sum of positive squares in 2 ways, for example, as 5957524225 + 5174788096 = 77185^2 + 71936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11132312321 is a prime.

It is a super-2 number, since 2×11132312321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11132312293 and 11132312302.

It is not an unprimeable number, because it can be changed into a prime (11132312311) 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, 428165846 + ... + 428165871.

It is an arithmetic number, because the mean of its divisors is an integer number (2997161013).

Almost surely, 2^11132312321 is an apocalyptic number.

It is an amenable number.

11132312321 is a deficient number, since it is larger than the sum of its proper divisors (856331731).

11132312321 is an equidigital number, since it uses as much as digits as its factorization.

11132312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856331730.

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

Adding to 11132312321 its reverse (12321323111), we get a palindrome (23453635432).

The spelling of 11132312321 in words is "eleven billion, one hundred thirty-two million, three hundred twelve thousand, three hundred twenty-one".