1321444200205 has 8 divisors (see below), whose sum is σ = 1591336338912. Its totient is φ = 1053419827728.

The previous prime is 1321444200187. The next prime is 1321444200221. The reversal of 1321444200205 is 5020024441231.

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 1321444200205 - 2¹¹ = 1321444198157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466939999 + ... + 466942828.

It is an arithmetic number, because the mean of its divisors is an integer number (198917042364).

Almost surely, 2^{1321444200205} is an apocalyptic number.

It is an amenable number.

1321444200205 is a deficient number, since it is larger than the sum of its proper divisors (269892138707).

1321444200205 is an equidigital number, since it uses as much as digits as its factorization.

1321444200205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933883115.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1321444200205 its reverse (5020024441231), we get a palindrome (6341468641436).

The spelling of 1321444200205 in words is "one trillion, three hundred twenty-one billion, four hundred forty-four million, two hundred thousand, two hundred five".