210002020221 has 96 divisors (see below), whose sum is σ = 344499858432. Its totient is φ = 111434526720.

The previous prime is 210002020169. The next prime is 210002020253. The reversal of 210002020221 is 122020200012.

210002020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210002020221 - 2⁷ = 210002020093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210002020197 and 210002020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002010221) 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 95 ways as a sum of consecutive naturals, for example, 214945285 + ... + 214946261.

It is an arithmetic number, because the mean of its divisors is an integer number (3588540192).

Almost surely, 2^210002020221 is an apocalyptic number.

210002020221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210002020221 is a deficient number, since it is larger than the sum of its proper divisors (134497838211).

210002020221 is a wasteful number, since it uses less digits than its factorization.

210002020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 210002020221 its reverse (122020200012), we get a palindrome (332022220233).

The spelling of 210002020221 in words is "two hundred ten billion, two million, twenty thousand, two hundred twenty-one".