201010001 has 2 divisors, whose sum is σ = 201010002. Its totient is φ = 201010000.

The previous prime is 201009997. The next prime is 201010027. The reversal of 201010001 is 100010102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140185600 + 60824401 = 11840^2 + 7799^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010001 - 2² = 201009997 is a prime.

It is not a weakly prime, because it can be changed into another prime (201010081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505000 + 100505001.

It is an arithmetic number, because the mean of its divisors is an integer number (100505001).

Almost surely, 2^201010001 is an apocalyptic number.

It is an amenable number.

201010001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010001 is an equidigital number, since it uses as much as digits as its factorization.

201010001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 201010001 is about 14177.7995824458. The cubic root of 201010001 is about 585.7863154469.

Adding to 201010001 its reverse (100010102), we get a palindrome (301020103).

The spelling of 201010001 in words is "two hundred one million, ten thousand, one".