10021002020001 has 40 divisors (see below), whose sum is σ = 17125430203904. Its totient is φ = 5720508256320.

The previous prime is 10021002019999. The next prime is 10021002020027. The reversal of 10021002020001 is 10002020012001.

It is not a de Polignac number, because 10021002020001 - 2¹ = 10021002019999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021002020401) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8355220 + ... + 9479013.

Almost surely, 2^{10021002020001} is an apocalyptic number.

It is an amenable number.

10021002020001 is a deficient number, since it is larger than the sum of its proper divisors (7104428183903).

10021002020001 is an equidigital number, since it uses as much as digits as its factorization.

10021002020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17835243 (or 17835234 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10021002020001 its reverse (10002020012001), we get a palindrome (20023022032002).

The spelling of 10021002020001 in words is "ten trillion, twenty-one billion, two million, twenty thousand, one".