1320001021223 has 2 divisors, whose sum is σ = 1320001021224. Its totient is φ = 1320001021222.

The previous prime is 1320001021177. The next prime is 1320001021237. The reversal of 1320001021223 is 3221201000231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320001021223 - 2⁶ = 1320001021159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320001021523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660000510611 + 660000510612.

It is an arithmetic number, because the mean of its divisors is an integer number (660000510612).

Almost surely, 2^{1320001021223} is an apocalyptic number.

1320001021223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320001021223 is an equidigital number, since it uses as much as digits as its factorization.

1320001021223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1320001021223 its reverse (3221201000231), we get a palindrome (4541202021454).

The spelling of 1320001021223 in words is "one trillion, three hundred twenty billion, one million, twenty-one thousand, two hundred twenty-three".