21210210010211 has 8 divisors (see below), whose sum is σ = 21769076266224. Its totient is φ = 20653322042880.

The previous prime is 21210210010207. The next prime is 21210210010261. The reversal of 21210210010211 is 11201001201212.

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 21210210010211 - 2² = 21210210010207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210210010261) 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, 494550446 + ... + 494593331.

It is an arithmetic number, because the mean of its divisors is an integer number (2721134533278).

Almost surely, 2^{21210210010211} is an apocalyptic number.

21210210010211 is a deficient number, since it is larger than the sum of its proper divisors (558866256013).

21210210010211 is an equidigital number, since it uses as much as digits as its factorization.

21210210010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989144341.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21210210010211 its reverse (11201001201212), we get a palindrome (32411211211423).

The spelling of 21210210010211 in words is "twenty-one trillion, two hundred ten billion, two hundred ten million, ten thousand, two hundred eleven".