10002000202021 has 4 divisors (see below), whose sum is σ = 10014363614700. Its totient is φ = 9989636789344.

The previous prime is 10002000202013. The next prime is 10002000202057. The reversal of 10002000202021 is 12020200020001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7599146789025 + 2402853412996 = 2756655^2 + 1550114^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002000202021 - 2³ = 10002000202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002000201989 and 10002000202007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002000202091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6181705126 + ... + 6181706743.

It is an arithmetic number, because the mean of its divisors is an integer number (2503590903675).

Almost surely, 2^{10002000202021} is an apocalyptic number.

It is an amenable number.

10002000202021 is a deficient number, since it is larger than the sum of its proper divisors (12363412679).

10002000202021 is an equidigital number, since it uses as much as digits as its factorization.

10002000202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12363412678.

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

Adding to 10002000202021 its reverse (12020200020001), we get a palindrome (22022200222022).

The spelling of 10002000202021 in words is "ten trillion, two billion, two hundred two thousand, twenty-one".