10021002001 has 2 divisors, whose sum is σ = 10021002002. Its totient is φ = 10021002000.

The previous prime is 10021001987. The next prime is 10021002011. The reversal of 10021002001 is 10020012001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9981009025 + 39992976 = 99905^2 + 6324^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021002001 - 2¹⁷ = 10020870929 is a prime.

It is a super-2 number, since 2×10021002001² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10021002011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010501000 + 5010501001.

It is an arithmetic number, because the mean of its divisors is an integer number (5010501001).

Almost surely, 2^10021002001 is an apocalyptic number.

It is an amenable number.

10021002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021002001 is an equidigital number, since it uses as much as digits as its factorization.

10021002001 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 7.

Adding to 10021002001 its reverse (10020012001), we get a palindrome (20041014002).

The spelling of 10021002001 in words is "ten billion, twenty-one million, two thousand, one".