10001020501 has 2 divisors, whose sum is σ = 10001020502. Its totient is φ = 10001020500.

The previous prime is 10001020451. The next prime is 10001020541. The reversal of 10001020501 is 10502010001.

It is a happy number.

10001020501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9249438276 + 751582225 = 96174^2 + 27415^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001020501 - 2¹³ = 10001012309 is a prime.

It is a super-2 number, since 2×10001020501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001020541) 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, 5000510250 + 5000510251.

It is an arithmetic number, because the mean of its divisors is an integer number (5000510251).

Almost surely, 2^10001020501 is an apocalyptic number.

It is an amenable number.

10001020501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001020501 is an equidigital number, since it uses as much as digits as its factorization.

10001020501 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10001020501 its reverse (10502010001), we get a palindrome (20503030502).

The spelling of 10001020501 in words is "ten billion, one million, twenty thousand, five hundred one".