10200102020021 has 2 divisors, whose sum is σ = 10200102020022. Its totient is φ = 10200102020020.

The previous prime is 10200102019979. The next prime is 10200102020033. The reversal of 10200102020021 is 12002020100201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10193722803121 + 6379216900 = 3192761^2 + 79870^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200102020021 - 2²² = 10200097825717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10200102019984 and 10200102020011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10200102020071) 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 as a sum of consecutive naturals, namely, 5100051010010 + 5100051010011.

It is an arithmetic number, because the mean of its divisors is an integer number (5100051010011).

Almost surely, 2^{10200102020021} is an apocalyptic number.

It is an amenable number.

10200102020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200102020021 is an equidigital number, since it uses as much as digits as its factorization.

10200102020021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10200102020021 its reverse (12002020100201), we get a palindrome (22202122120222).

The spelling of 10200102020021 in words is "ten trillion, two hundred billion, one hundred two million, twenty thousand, twenty-one".