1321230322443 has 8 divisors (see below), whose sum is σ = 1762680980368. Its totient is φ = 880299939744.

The previous prime is 1321230322403. The next prime is 1321230322487. The reversal of 1321230322443 is 3442230321231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321230322443 - 2¹⁷ = 1321230191371 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 1321230322443.

It is not an unprimeable number, because it can be changed into a prime (1321230322403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130062880 + ... + 130073037.

It is an arithmetic number, because the mean of its divisors is an integer number (220335122546).

Almost surely, 2^{1321230322443} is an apocalyptic number.

1321230322443 is a deficient number, since it is larger than the sum of its proper divisors (441450657925).

1321230322443 is a wasteful number, since it uses less digits than its factorization.

1321230322443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260137613.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1321230322443 its reverse (3442230321231), we get a palindrome (4763460643674).

The spelling of 1321230322443 in words is "one trillion, three hundred twenty-one billion, two hundred thirty million, three hundred twenty-two thousand, four hundred forty-three".