10201021001 has 2 divisors, whose sum is σ = 10201021002. Its totient is φ = 10201021000.

The previous prime is 10201020989. The next prime is 10201021049. The reversal of 10201021001 is 10012010201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9820810000 + 380211001 = 99100^2 + 19499^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201021001 - 2⁶ = 10201020937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10201021001.

It is not a weakly prime, because it can be changed into another prime (10201021091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100510500 + 5100510501.

It is an arithmetic number, because the mean of its divisors is an integer number (5100510501).

Almost surely, 2^10201021001 is an apocalyptic number.

It is an amenable number.

10201021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201021001 is an equidigital number, since it uses as much as digits as its factorization.

10201021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10201021001 its reverse (10012010201), we get a palindrome (20213031202).

The spelling of 10201021001 in words is "ten billion, two hundred one million, twenty-one thousand, one".