1103123323321 has 2 divisors, whose sum is σ = 1103123323322. Its totient is φ = 1103123323320.

The previous prime is 1103123323319. The next prime is 1103123323343. The reversal of 1103123323321 is 1233233213011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557955217296 + 545168106025 = 746964^2 + 738355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103123323321 - 2¹ = 1103123323319 is a prime.

Together with 1103123323319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1103123323021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551561661660 + 551561661661.

It is an arithmetic number, because the mean of its divisors is an integer number (551561661661).

Almost surely, 2^{1103123323321} is an apocalyptic number.

It is an amenable number.

1103123323321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103123323321 is an equidigital number, since it uses as much as digits as its factorization.

1103123323321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1103123323321 its reverse (1233233213011), we get a palindrome (2336356536332).

The spelling of 1103123323321 in words is "one trillion, one hundred three billion, one hundred twenty-three million, three hundred twenty-three thousand, three hundred twenty-one".