1321333201241 has 2 divisors, whose sum is σ = 1321333201242. Its totient is φ = 1321333201240.

The previous prime is 1321333201211. The next prime is 1321333201301. The reversal of 1321333201241 is 1421023331231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1182919439641 + 138413761600 = 1087621^2 + 372040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321333201241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321333201241.

It is not a weakly prime, because it can be changed into another prime (1321333201211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660666600620 + 660666600621.

It is an arithmetic number, because the mean of its divisors is an integer number (660666600621).

Almost surely, 2^{1321333201241} is an apocalyptic number.

It is an amenable number.

1321333201241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321333201241 is an equidigital number, since it uses as much as digits as its factorization.

1321333201241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 1321333201241 its reverse (1421023331231), we get a palindrome (2742356532472).

The spelling of 1321333201241 in words is "one trillion, three hundred twenty-one billion, three hundred thirty-three million, two hundred one thousand, two hundred forty-one".