1321342203121 has 8 divisors (see below), whose sum is σ = 1325757724200. Its totient is φ = 1316931907200.

The previous prime is 1321342203109. The next prime is 1321342203179. The reversal of 1321342203121 is 1213022431231.

It can be written as a sum of positive squares in 4 ways, for example, as 50906640625 + 1270435562496 = 225625^2 + 1127136^2 .

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 1321342203121 - 2⁵ = 1321342203089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321342201121) 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, 799356 + ... + 1811533.

It is an arithmetic number, because the mean of its divisors is an integer number (165719715525).

Almost surely, 2^{1321342203121} is an apocalyptic number.

It is an amenable number.

1321342203121 is a deficient number, since it is larger than the sum of its proper divisors (4415521079).

1321342203121 is a wasteful number, since it uses less digits than its factorization.

1321342203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612579.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1321342203121 its reverse (1213022431231), we get a palindrome (2534364634352).

The spelling of 1321342203121 in words is "one trillion, three hundred twenty-one billion, three hundred forty-two million, two hundred three thousand, one hundred twenty-one".