13122001 has 2 divisors, whose sum is σ = 13122002. Its totient is φ = 13122000.

The previous prime is 13121993. The next prime is 13122037. The reversal of 13122001 is 10022131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 2099601 = 3320^2 + 1449^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122001 - 2³ = 13121993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13122061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561000 + 6561001.

It is an arithmetic number, because the mean of its divisors is an integer number (6561001).

Almost surely, 2^13122001 is an apocalyptic number.

It is an amenable number.

13122001 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122001 is an equidigital number, since it uses as much as digits as its factorization.

13122001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 13122001 is about 3622.4302615785. The cubic root of 13122001 is about 235.8667314704.

Adding to 13122001 its reverse (10022131), we get a palindrome (23144132).

The spelling of 13122001 in words is "thirteen million, one hundred twenty-two thousand, one".