11424400321 has 2 divisors, whose sum is σ = 11424400322. Its totient is φ = 11424400320.

The previous prime is 11424400307. The next prime is 11424400343. The reversal of 11424400321 is 12300442411.

It is a happy number.

It is an a-pointer prime, because the next prime (11424400343) can be obtained adding 11424400321 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11419059600 + 5340721 = 106860^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 11424400321 - 2⁷ = 11424400193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11424400292 and 11424400301.

It is not a weakly prime, because it can be changed into another prime (11424400381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5712200160 + 5712200161.

It is an arithmetic number, because the mean of its divisors is an integer number (5712200161).

Almost surely, 2^11424400321 is an apocalyptic number.

It is an amenable number.

11424400321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11424400321 is an equidigital number, since it uses as much as digits as its factorization.

11424400321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11424400321 its reverse (12300442411), we get a palindrome (23724842732).

The spelling of 11424400321 in words is "eleven billion, four hundred twenty-four million, four hundred thousand, three hundred twenty-one".