11323023221 has 2 divisors, whose sum is σ = 11323023222. Its totient is φ = 11323023220.

The previous prime is 11323023199. The next prime is 11323023253. The reversal of 11323023221 is 12232032311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10482892996 + 840130225 = 102386^2 + 28985^2 .

It is an emirp because it is prime and its reverse (12232032311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11323023221 - 2¹⁰ = 11323022197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11323023193 and 11323023202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11326023221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661511610 + 5661511611.

It is an arithmetic number, because the mean of its divisors is an integer number (5661511611).

Almost surely, 2^11323023221 is an apocalyptic number.

It is an amenable number.

11323023221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11323023221 is an equidigital number, since it uses as much as digits as its factorization.

11323023221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 11323023221 its reverse (12232032311), we get a palindrome (23555055532).

The spelling of 11323023221 in words is "eleven billion, three hundred twenty-three million, twenty-three thousand, two hundred twenty-one".