21212000110211 has 32 divisors (see below), whose sum is σ = 22545702051840. Its totient is φ = 19915751471616.

The previous prime is 21212000110199. The next prime is 21212000110247. The reversal of 21212000110211 is 11201100021212.

It is a cyclic number.

It is not a de Polignac number, because 21212000110211 - 2³⁸ = 20937122203267 is a prime.

It is a super-2 number, since 2×21212000110211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21212000110261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474975995 + ... + 475020651.

It is an arithmetic number, because the mean of its divisors is an integer number (704553189120).

Almost surely, 2^{21212000110211} is an apocalyptic number.

21212000110211 is a deficient number, since it is larger than the sum of its proper divisors (1333701941629).

21212000110211 is a wasteful number, since it uses less digits than its factorization.

21212000110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46283.

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

Adding to 21212000110211 its reverse (11201100021212), we get a palindrome (32413100131423).

The spelling of 21212000110211 in words is "twenty-one trillion, two hundred twelve billion, one hundred ten thousand, two hundred eleven".