11232112321 has 4 divisors (see below), whose sum is σ = 11243899332. Its totient is φ = 11220325312.

The previous prime is 11232112303. The next prime is 11232112357. The reversal of 11232112321 is 12321123211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12321123211 = 19 ⋅648480169.

It can be written as a sum of positive squares in 2 ways, for example, as 1375593921 + 9856518400 = 37089^2 + 99280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232112321 - 2²⁹ = 10695241409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11232112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5892076 + ... + 5893981.

It is an arithmetic number, because the mean of its divisors is an integer number (2810974833).

Almost surely, 2^11232112321 is an apocalyptic number.

It is an amenable number.

11232112321 is a deficient number, since it is larger than the sum of its proper divisors (11787011).

11232112321 is an equidigital number, since it uses as much as digits as its factorization.

11232112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11787010.

The product of its digits is 144, while the sum is 19.

Adding to 11232112321 its reverse (12321123211), we get a palindrome (23553235532).

The spelling of 11232112321 in words is "eleven billion, two hundred thirty-two million, one hundred twelve thousand, three hundred twenty-one".