1302132221321 has 2 divisors, whose sum is σ = 1302132221322. Its totient is φ = 1302132221320.

The previous prime is 1302132221309. The next prime is 1302132221347. The reversal of 1302132221321 is 1231222312031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 776224433296 + 525907788025 = 881036^2 + 725195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302132221321 - 2³⁴ = 1284952352137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1302132221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651066110660 + 651066110661.

It is an arithmetic number, because the mean of its divisors is an integer number (651066110661).

Almost surely, 2^{1302132221321} is an apocalyptic number.

It is an amenable number.

1302132221321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302132221321 is an equidigital number, since it uses as much as digits as its factorization.

1302132221321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1302132221321 its reverse (1231222312031), we get a palindrome (2533354533352).

The spelling of 1302132221321 in words is "one trillion, three hundred two billion, one hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-one".