10200002021021 has 4 divisors (see below), whose sum is σ = 10200334917312. Its totient is φ = 10199669124732.

The previous prime is 10200002020987. The next prime is 10200002021039. The reversal of 10200002021021 is 12012020000201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10200002021021 - 2²⁶ = 10199934912157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10200002020993 and 10200002021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200002021051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166402181 + ... + 166463466.

It is an arithmetic number, because the mean of its divisors is an integer number (2550083729328).

Almost surely, 2^{10200002021021} is an apocalyptic number.

It is an amenable number.

10200002021021 is a deficient number, since it is larger than the sum of its proper divisors (332896291).

10200002021021 is an equidigital number, since it uses as much as digits as its factorization.

10200002021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332896290.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10200002021021 its reverse (12012020000201), we get a palindrome (22212022021222).

The spelling of 10200002021021 in words is "ten trillion, two hundred billion, two million, twenty-one thousand, twenty-one".