2000020021021 has 24 divisors (see below), whose sum is σ = 2204836187904. Its totient is φ = 1799234026560.

The previous prime is 2000020021019. The next prime is 2000020021039. The reversal of 2000020021021 is 1201200200002.

It is not a de Polignac number, because 2000020021021 - 2¹ = 2000020021019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000020020989 and 2000020021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000020021921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182861865 + ... + 182872801.

It is an arithmetic number, because the mean of its divisors is an integer number (91868174496).

Almost surely, 2^{2000020021021} is an apocalyptic number.

It is an amenable number.

2000020021021 is a deficient number, since it is larger than the sum of its proper divisors (204816166883).

2000020021021 is a wasteful number, since it uses less digits than its factorization.

2000020021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12721 (or 12618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2000020021021 its reverse (1201200200002), we get a palindrome (3201220221023).

The spelling of 2000020021021 in words is "two trillion, twenty million, twenty-one thousand, twenty-one".