13121332201 has 2 divisors, whose sum is σ = 13121332202. Its totient is φ = 13121332200.

The previous prime is 13121332187. The next prime is 13121332247. The reversal of 13121332201 is 10223312131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9535717801 + 3585614400 = 97651^2 + 59880^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121332201 - 2⁹ = 13121331689 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121332291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560666100 + 6560666101.

It is an arithmetic number, because the mean of its divisors is an integer number (6560666101).

Almost surely, 2^13121332201 is an apocalyptic number.

It is an amenable number.

13121332201 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121332201 is an equidigital number, since it uses as much as digits as its factorization.

13121332201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13121332201 its reverse (10223312131), we get a palindrome (23344644332).

The spelling of 13121332201 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-two thousand, two hundred one".