210243302021 has 8 divisors (see below), whose sum is σ = 212314350144. Its totient is φ = 208172828160.

The previous prime is 210243301987. The next prime is 210243302029. The reversal of 210243302021 is 120203342012.

210243302021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210243302021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210243301984 and 210243302002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243302029) 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 7 ways as a sum of consecutive naturals, for example, 611726 + ... + 891456.

It is an arithmetic number, because the mean of its divisors is an integer number (26539293768).

Almost surely, 2^210243302021 is an apocalyptic number.

It is an amenable number.

210243302021 is a deficient number, since it is larger than the sum of its proper divisors (2071048123).

210243302021 is a wasteful number, since it uses less digits than its factorization.

210243302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287131.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 210243302021 its reverse (120203342012), we get a palindrome (330446644033).

The spelling of 210243302021 in words is "two hundred ten billion, two hundred forty-three million, three hundred two thousand, twenty-one".