1321322330023 has 4 divisors (see below), whose sum is σ = 1353549703968. Its totient is φ = 1289094956080.

The previous prime is 1321322330021. The next prime is 1321322330033. The reversal of 1321322330023 is 3200332231231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321322330023 - 2¹ = 1321322330021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321322330023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321322330021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16113686911 + ... + 16113686992.

It is an arithmetic number, because the mean of its divisors is an integer number (338387425992).

Almost surely, 2^{1321322330023} is an apocalyptic number.

1321322330023 is a deficient number, since it is larger than the sum of its proper divisors (32227373945).

1321322330023 is an equidigital number, since it uses as much as digits as its factorization.

1321322330023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32227373944.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 1321322330023 its reverse (3200332231231), we get a palindrome (4521654561254).

The spelling of 1321322330023 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-two million, three hundred thirty thousand, twenty-three".