210002120221 has 8 divisors (see below), whose sum is σ = 210117563264. Its totient is φ = 209886716160.

The previous prime is 210002120219. The next prime is 210002120257. The reversal of 210002120221 is 122021200012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 210002120221 - 2¹ = 210002120219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002180221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20629885 + ... + 20640061.

It is an arithmetic number, because the mean of its divisors is an integer number (26264695408).

Almost surely, 2^210002120221 is an apocalyptic number.

It is an amenable number.

210002120221 is a deficient number, since it is larger than the sum of its proper divisors (115443043).

210002120221 is a wasteful number, since it uses less digits than its factorization.

210002120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19491.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210002120221 its reverse (122021200012), we get a palindrome (332023320233).

The spelling of 210002120221 in words is "two hundred ten billion, two million, one hundred twenty thousand, two hundred twenty-one".