1321200301321 has 4 divisors (see below), whose sum is σ = 1330705339600. Its totient is φ = 1311695263044.

The previous prime is 1321200301319. The next prime is 1321200301339. The reversal of 1321200301321 is 1231030021231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321200301321 - 2¹ = 1321200301319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321200301301) 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, 4752518931 + ... + 4752519208.

It is an arithmetic number, because the mean of its divisors is an integer number (332676334900).

Almost surely, 2^{1321200301321} is an apocalyptic number.

It is an amenable number.

1321200301321 is a deficient number, since it is larger than the sum of its proper divisors (9505038279).

1321200301321 is an equidigital number, since it uses as much as digits as its factorization.

1321200301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505038278.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1321200301321 its reverse (1231030021231), we get a palindrome (2552230322552).

The spelling of 1321200301321 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred one thousand, three hundred twenty-one".