1121323230173 has 2 divisors, whose sum is σ = 1121323230174. Its totient is φ = 1121323230172.

The previous prime is 1121323230169. The next prime is 1121323230211. The reversal of 1121323230173 is 3710323231211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 896076171769 + 225247058404 = 946613^2 + 474602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121323230173 - 2² = 1121323230169 is a prime.

It is a super-2 number, since 2×1121323230173² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121323230133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560661615086 + 560661615087.

It is an arithmetic number, because the mean of its divisors is an integer number (560661615087).

Almost surely, 2^{1121323230173} is an apocalyptic number.

It is an amenable number.

1121323230173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121323230173 is an equidigital number, since it uses as much as digits as its factorization.

1121323230173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 1121323230173 its reverse (3710323231211), we get a palindrome (4831646461384).

The spelling of 1121323230173 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-three million, two hundred thirty thousand, one hundred seventy-three".