1321320204223 has 8 divisors (see below), whose sum is σ = 1346344092000. Its totient is φ = 1296299772768.

The previous prime is 1321320204199. The next prime is 1321320204287. The reversal of 1321320204223 is 3224020231231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321320204223 - 2²¹ = 1321318107071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321320204023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85683 + ... + 1627876.

It is an arithmetic number, because the mean of its divisors is an integer number (168293011500).

Almost surely, 2^{1321320204223} is an apocalyptic number.

1321320204223 is a deficient number, since it is larger than the sum of its proper divisors (25023887777).

1321320204223 is a wasteful number, since it uses less digits than its factorization.

1321320204223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728161.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1321320204223 its reverse (3224020231231), we get a palindrome (4545340435454).

The spelling of 1321320204223 in words is "one trillion, three hundred twenty-one billion, three hundred twenty million, two hundred four thousand, two hundred twenty-three".