224123320321 has 2 divisors, whose sum is σ = 224123320322. Its totient is φ = 224123320320.

The previous prime is 224123320319. The next prime is 224123320339. The reversal of 224123320321 is 123023321422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112493160000 + 111630160321 = 335400^2 + 334111^2 .

It is a cyclic number.

It is not a de Polignac number, because 224123320321 - 2¹ = 224123320319 is a prime.

Together with 224123320319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (224123320361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112061660160 + 112061660161.

It is an arithmetic number, because the mean of its divisors is an integer number (112061660161).

Almost surely, 2^224123320321 is an apocalyptic number.

It is an amenable number.

224123320321 is a deficient number, since it is larger than the sum of its proper divisors (1).

224123320321 is an equidigital number, since it uses as much as digits as its factorization.

224123320321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 224123320321 its reverse (123023321422), we get a palindrome (347146641743).

The spelling of 224123320321 in words is "two hundred twenty-four billion, one hundred twenty-three million, three hundred twenty thousand, three hundred twenty-one".