11121203321 has 4 divisors (see below), whose sum is σ = 11121475200. Its totient is φ = 11120931444.

The previous prime is 11121203299. The next prime is 11121203351. The reversal of 11121203321 is 12330212111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12330212111 = 7 ⋅1761458873.

It is a cyclic number.

It is not a de Polignac number, because 11121203321 - 2¹⁰ = 11121202297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121203321.

It is not an unprimeable number, because it can be changed into a prime (11121203351) 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, 60701 + ... + 161018.

It is an arithmetic number, because the mean of its divisors is an integer number (2780368800).

Almost surely, 2^11121203321 is an apocalyptic number.

It is an amenable number.

11121203321 is a deficient number, since it is larger than the sum of its proper divisors (271879).

11121203321 is an equidigital number, since it uses as much as digits as its factorization.

11121203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271878.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11121203321 its reverse (12330212111), we get a palindrome (23451415432).

The spelling of 11121203321 in words is "eleven billion, one hundred twenty-one million, two hundred three thousand, three hundred twenty-one".