210001220211 has 8 divisors (see below), whose sum is σ = 280118841040. Its totient is φ = 139942206432.

The previous prime is 210001220207. The next prime is 210001220227. The reversal of 210001220211 is 112022100012.

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

It is not a de Polignac number, because 210001220211 - 2² = 210001220207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210001220291) 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, 14643400 + ... + 14657733.

It is an arithmetic number, because the mean of its divisors is an integer number (35014855130).

Almost surely, 2^210001220211 is an apocalyptic number.

210001220211 is a deficient number, since it is larger than the sum of its proper divisors (70117620829).

210001220211 is a wasteful number, since it uses less digits than its factorization.

210001220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29303525.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210001220211 its reverse (112022100012), we get a palindrome (322023320223).

The spelling of 210001220211 in words is "two hundred ten billion, one million, two hundred twenty thousand, two hundred eleven".