321320112013361 has 2 divisors, whose sum is σ = 321320112013362. Its totient is φ = 321320112013360.

The previous prime is 321320112013343. The next prime is 321320112013463. The reversal of 321320112013361 is 163310211023123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287544766551025 + 33775345462336 = 16957145^2 + 5811656^2 .

It is a cyclic number.

It is not a de Polignac number, because 321320112013361 - 2²² = 321320107819057 is a prime.

It is a super-2 number, since 2×321320112013361² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321320112813361) 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, 160660056006680 + 160660056006681.

It is an arithmetic number, because the mean of its divisors is an integer number (160660056006681).

Almost surely, 2^{321320112013361} is an apocalyptic number.

It is an amenable number.

321320112013361 is a deficient number, since it is larger than the sum of its proper divisors (1).

321320112013361 is an equidigital number, since it uses as much as digits as its factorization.

321320112013361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 321320112013361 its reverse (163310211023123), we get a palindrome (484630323036484).

The spelling of 321320112013361 in words is "three hundred twenty-one trillion, three hundred twenty billion, one hundred twelve million, thirteen thousand, three hundred sixty-one".