1313122201 has 2 divisors, whose sum is σ = 1313122202. Its totient is φ = 1313122200.

The previous prime is 1313122199. The next prime is 1313122207. The reversal of 1313122201 is 1022213131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034265600 + 278856601 = 32160^2 + 16699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313122201 - 2¹ = 1313122199 is a prime.

Together with 1313122199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1313122207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656561100 + 656561101.

It is an arithmetic number, because the mean of its divisors is an integer number (656561101).

Almost surely, 2^1313122201 is an apocalyptic number.

It is an amenable number.

1313122201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313122201 is an equidigital number, since it uses as much as digits as its factorization.

1313122201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1313122201 is about 36237.0280376302. The cubic root of 1313122201 is about 1095.0527697789.

Adding to 1313122201 its reverse (1022213131), we get a palindrome (2335335332).

The spelling of 1313122201 in words is "one billion, three hundred thirteen million, one hundred twenty-two thousand, two hundred one".