10010020200021 has 12 divisors (see below), whose sum is σ = 14460246054540. Its totient is φ = 6672733882560.

The previous prime is 10010020199981. The next prime is 10010020200029. The reversal of 10010020200021 is 12000202001001.

It can be written as a sum of positive squares in 2 ways, for example, as 3598798702500 + 6411221497521 = 1897050^2 + 2532039^2 .

It is not a de Polignac number, because 10010020200021 - 2¹¹ = 10010020197973 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10010020199976 and 10010020200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010020200029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50973010 + ... + 51169011.

It is an arithmetic number, because the mean of its divisors is an integer number (1205020504545).

Almost surely, 2^{10010020200021} is an apocalyptic number.

It is an amenable number.

10010020200021 is a deficient number, since it is larger than the sum of its proper divisors (4450225854519).

10010020200021 is a wasteful number, since it uses less digits than its factorization.

10010020200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102152916 (or 102152913 counting only the distinct ones).

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

Adding to 10010020200021 its reverse (12000202001001), we get a palindrome (22010222201022).

The spelling of 10010020200021 in words is "ten trillion, ten billion, twenty million, two hundred thousand, twenty-one".