2321221021321 has 2 divisors, whose sum is σ = 2321221021322. Its totient is φ = 2321221021320.

The previous prime is 2321221021271. The next prime is 2321221021349. The reversal of 2321221021321 is 1231201221232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1696506250000 + 624714771321 = 1302500^2 + 790389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321221021321 - 2⁷ = 2321221021193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2321221021292 and 2321221021301.

It is not a weakly prime, because it can be changed into another prime (2321221024321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160610510660 + 1160610510661.

It is an arithmetic number, because the mean of its divisors is an integer number (1160610510661).

Almost surely, 2^{2321221021321} is an apocalyptic number.

It is an amenable number.

2321221021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321221021321 is an equidigital number, since it uses as much as digits as its factorization.

2321221021321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2321221021321 its reverse (1231201221232), we get a palindrome (3552422242553).

The spelling of 2321221021321 in words is "two trillion, three hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand, three hundred twenty-one".