7901331203321 has 2 divisors, whose sum is σ = 7901331203322. Its totient is φ = 7901331203320.

The previous prime is 7901331203299. The next prime is 7901331203377. The reversal of 7901331203321 is 1233021331097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4732521790096 + 3168809413225 = 2175436^2 + 1780115^2 .

It is an emirp because it is prime and its reverse (1233021331097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7901331203321 - 2⁶ = 7901331203257 is a prime.

It is not a weakly prime, because it can be changed into another prime (7901331503321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950665601660 + 3950665601661.

It is an arithmetic number, because the mean of its divisors is an integer number (3950665601661).

Almost surely, 2^{7901331203321} is an apocalyptic number.

It is an amenable number.

7901331203321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7901331203321 is an equidigital number, since it uses as much as digits as its factorization.

7901331203321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 35.

The spelling of 7901331203321 in words is "seven trillion, nine hundred one billion, three hundred thirty-one million, two hundred three thousand, three hundred twenty-one".