1331242033321 has 2 divisors, whose sum is σ = 1331242033322. Its totient is φ = 1331242033320.

The previous prime is 1331242033243. The next prime is 1331242033337. The reversal of 1331242033321 is 1233302421331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110916000000 + 220326033321 = 1054000^2 + 469389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331242033321 - 2¹⁹ = 1331241509033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331242033321.

It is not a weakly prime, because it can be changed into another prime (1331242333321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665621016660 + 665621016661.

It is an arithmetic number, because the mean of its divisors is an integer number (665621016661).

Almost surely, 2^{1331242033321} is an apocalyptic number.

It is an amenable number.

1331242033321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331242033321 is an equidigital number, since it uses as much as digits as its factorization.

1331242033321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1331242033321 its reverse (1233302421331), we get a palindrome (2564544454652).

The spelling of 1331242033321 in words is "one trillion, three hundred thirty-one billion, two hundred forty-two million, thirty-three thousand, three hundred twenty-one".