1321223301023 has 2 divisors, whose sum is σ = 1321223301024. Its totient is φ = 1321223301022.

The previous prime is 1321223300953. The next prime is 1321223301043. The reversal of 1321223301023 is 3201033221231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321223301023 - 2²⁰ = 1321222252447 is a prime.

It is a super-2 number, since 2×1321223301023² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321223301023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321223301043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660611650511 + 660611650512.

It is an arithmetic number, because the mean of its divisors is an integer number (660611650512).

Almost surely, 2^{1321223301023} is an apocalyptic number.

1321223301023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321223301023 is an equidigital number, since it uses as much as digits as its factorization.

1321223301023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1321223301023 its reverse (3201033221231), we get a palindrome (4522256522254).

The spelling of 1321223301023 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-three million, three hundred one thousand, twenty-three".