1123220321393 has 2 divisors, whose sum is σ = 1123220321394. Its totient is φ = 1123220321392.

The previous prime is 1123220321369. The next prime is 1123220321401. The reversal of 1123220321393 is 3931230223211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672773971984 + 450446349409 = 820228^2 + 671153^2 .

It is an emirp because it is prime and its reverse (3931230223211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123220321393 - 2⁸ = 1123220321137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123220324393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561610160696 + 561610160697.

It is an arithmetic number, because the mean of its divisors is an integer number (561610160697).

Almost surely, 2^{1123220321393} is an apocalyptic number.

It is an amenable number.

1123220321393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123220321393 is an equidigital number, since it uses as much as digits as its factorization.

1123220321393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 1123220321393 in words is "one trillion, one hundred twenty-three billion, two hundred twenty million, three hundred twenty-one thousand, three hundred ninety-three".