21200212100211 has 64 divisors (see below), whose sum is σ = 30049500096000. Its totient is φ = 13271926864896.

The previous prime is 21200212100189. The next prime is 21200212100213. The reversal of 21200212100211 is 11200121200212.

It is not a de Polignac number, because 21200212100211 - 2⁹ = 21200212099699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200212100213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1204754065 + ... + 1204771661.

It is an arithmetic number, because the mean of its divisors is an integer number (469523439000).

Almost surely, 2^{21200212100211} is an apocalyptic number.

21200212100211 is a deficient number, since it is larger than the sum of its proper divisors (8849287995789).

21200212100211 is a wasteful number, since it uses less digits than its factorization.

21200212100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19028.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21200212100211 its reverse (11200121200212), we get a palindrome (32400333300423).

The spelling of 21200212100211 in words is "twenty-one trillion, two hundred billion, two hundred twelve million, one hundred thousand, two hundred eleven".