1123221032321 has 2 divisors, whose sum is σ = 1123221032322. Its totient is φ = 1123221032320.

The previous prime is 1123221032267. The next prime is 1123221032347. The reversal of 1123221032321 is 1232301223211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604692864400 + 518528167921 = 777620^2 + 720089^2 .

It is an emirp because it is prime and its reverse (1232301223211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123221032321 - 2¹⁰ = 1123221031297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123221232321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561610516160 + 561610516161.

It is an arithmetic number, because the mean of its divisors is an integer number (561610516161).

Almost surely, 2^{1123221032321} is an apocalyptic number.

It is an amenable number.

1123221032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123221032321 is an equidigital number, since it uses as much as digits as its factorization.

1123221032321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1123221032321 its reverse (1232301223211), we get a palindrome (2355522255532).

The spelling of 1123221032321 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-one million, thirty-two thousand, three hundred twenty-one".