10021020023009 has 2 divisors, whose sum is σ = 10021020023010. Its totient is φ = 10021020023008.

The previous prime is 10021020022967. The next prime is 10021020023017. The reversal of 10021020023009 is 90032002012001.

10021020023009 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., 9922657500625 + 98362522384 = 3150025^2 + 313628^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021020023009 - 2²⁴ = 10021003245793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10021020023909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010510011504 + 5010510011505.

It is an arithmetic number, because the mean of its divisors is an integer number (5010510011505).

Almost surely, 2^{10021020023009} is an apocalyptic number.

It is an amenable number.

10021020023009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021020023009 is an equidigital number, since it uses as much as digits as its factorization.

10021020023009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 10021020023009 in words is "ten trillion, twenty-one billion, twenty million, twenty-three thousand, nine".