10010020020021 has 64 divisors (see below), whose sum is σ = 17055533977600. Its totient is φ = 5683794090048.

The previous prime is 10010020020019. The next prime is 10010020020053. The reversal of 10010020020021 is 12002002001001.

It is not a de Polignac number, because 10010020020021 - 2¹ = 10010020020019 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 a junction number, because it is equal to n+sod(n) for n = 10010020019985 and 10010020020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010020020001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170240895 + ... + 170299683.

It is an arithmetic number, because the mean of its divisors is an integer number (266492718400).

Almost surely, 2^{10010020020021} is an apocalyptic number.

It is an amenable number.

10010020020021 is a deficient number, since it is larger than the sum of its proper divisors (7045513957579).

10010020020021 is a wasteful number, since it uses less digits than its factorization.

10010020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64495 (or 64489 counting only the distinct ones).

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

Adding to 10010020020021 its reverse (12002002001001), we get a palindrome (22012022021022).

The spelling of 10010020020021 in words is "ten trillion, ten billion, twenty million, twenty thousand, twenty-one".