13201321361 has 2 divisors, whose sum is σ = 13201321362. Its totient is φ = 13201321360.

The previous prime is 13201321351. The next prime is 13201321369. The reversal of 13201321361 is 16312310231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12643653136 + 557668225 = 112444^2 + 23615^2 .

It is a cyclic number.

It is not a de Polignac number, because 13201321361 - 2¹⁰ = 13201320337 is a prime.

It is not a weakly prime, because it can be changed into another prime (13201321369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600660680 + 6600660681.

It is an arithmetic number, because the mean of its divisors is an integer number (6600660681).

Almost surely, 2^13201321361 is an apocalyptic number.

It is an amenable number.

13201321361 is a deficient number, since it is larger than the sum of its proper divisors (1).

13201321361 is an equidigital number, since it uses as much as digits as its factorization.

13201321361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13201321361 its reverse (16312310231), we get a palindrome (29513631592).

The spelling of 13201321361 in words is "thirteen billion, two hundred one million, three hundred twenty-one thousand, three hundred sixty-one".