1321030010123 has 2 divisors, whose sum is σ = 1321030010124. Its totient is φ = 1321030010122.

The previous prime is 1321030010099. The next prime is 1321030010161. The reversal of 1321030010123 is 3210100301231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3210100301231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321030010123 - 2¹⁴ = 1321029993739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321030010723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660515005061 + 660515005062.

It is an arithmetic number, because the mean of its divisors is an integer number (660515005062).

Almost surely, 2^{1321030010123} is an apocalyptic number.

1321030010123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321030010123 is an equidigital number, since it uses as much as digits as its factorization.

1321030010123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1321030010123 its reverse (3210100301231), we get a palindrome (4531130311354).

The spelling of 1321030010123 in words is "one trillion, three hundred twenty-one billion, thirty million, ten thousand, one hundred twenty-three".