210002010002221 has 4 divisors (see below), whose sum is σ = 210002174173792. Its totient is φ = 210001845830652.

The previous prime is 210002010002209. The next prime is 210002010002227. The reversal of 210002010002221 is 122200010200012.

It is a happy number.

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 210002010002221 - 2¹⁹ = 210002009477933 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 (210002010002227) 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, 80151855 + ... + 82730428.

It is an arithmetic number, because the mean of its divisors is an integer number (52500543543448).

Almost surely, 2^{210002010002221} is an apocalyptic number.

It is an amenable number.

210002010002221 is a deficient number, since it is larger than the sum of its proper divisors (164171571).

210002010002221 is a wasteful number, since it uses less digits than its factorization.

210002010002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164171570.

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

Adding to 210002010002221 its reverse (122200010200012), we get a palindrome (332202020202233).

The spelling of 210002010002221 in words is "two hundred ten trillion, two billion, ten million, two thousand, two hundred twenty-one".