11321001223 has 4 divisors (see below), whose sum is σ = 12938287120. Its totient is φ = 9703715328.

The previous prime is 11321001217. The next prime is 11321001253. The reversal of 11321001223 is 32210012311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11321001223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321001197 and 11321001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321001253) 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, 808642938 + ... + 808642951.

It is an arithmetic number, because the mean of its divisors is an integer number (3234571780).

Almost surely, 2^11321001223 is an apocalyptic number.

11321001223 is a deficient number, since it is larger than the sum of its proper divisors (1617285897).

11321001223 is an equidigital number, since it uses as much as digits as its factorization.

11321001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617285896.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11321001223 its reverse (32210012311), we get a palindrome (43531013534).

The spelling of 11321001223 in words is "eleven billion, three hundred twenty-one million, one thousand, two hundred twenty-three".