210002202021021 has 4 divisors (see below), whose sum is σ = 280002936028032. Its totient is φ = 140001468014012.

The previous prime is 210002202020969. The next prime is 210002202021037. The reversal of 210002202021021 is 120120202200012.

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 210002202021021 - 2²⁷ = 210002067803293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002202021061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35000367003501 + ... + 35000367003506.

It is an arithmetic number, because the mean of its divisors is an integer number (70000734007008).

Almost surely, 2^{210002202021021} is an apocalyptic number.

It is an amenable number.

210002202021021 is a deficient number, since it is larger than the sum of its proper divisors (70000734007011).

210002202021021 is an equidigital number, since it uses as much as digits as its factorization.

210002202021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70000734007010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210002202021021 its reverse (120120202200012), we get a palindrome (330122404221033).

The spelling of 210002202021021 in words is "two hundred ten trillion, two billion, two hundred two million, twenty-one thousand, twenty-one".