210001110221 has 16 divisors (see below), whose sum is σ = 241138498176. Its totient is φ = 179148558336.

The previous prime is 210001110217. The next prime is 210001110233. The reversal of 210001110221 is 122011100012.

It is a cyclic number.

It is not a de Polignac number, because 210001110221 - 2² = 210001110217 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 (210001112221) 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 15 ways as a sum of consecutive naturals, for example, 5155085 + ... + 5195661.

It is an arithmetic number, because the mean of its divisors is an integer number (15071156136).

Almost surely, 2^210001110221 is an apocalyptic number.

It is an amenable number.

210001110221 is a deficient number, since it is larger than the sum of its proper divisors (31137387955).

210001110221 is a wasteful number, since it uses less digits than its factorization.

210001110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44068.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210001110221 its reverse (122011100012), we get a palindrome (332012210233).

The spelling of 210001110221 in words is "two hundred ten billion, one million, one hundred ten thousand, two hundred twenty-one".