21210110211110 has 32 divisors (see below), whose sum is σ = 40429324998720. Its totient is φ = 7983925829632.

The previous prime is 21210110211109. The next prime is 21210110211119. The reversal of 21210110211110 is 1111201101212.

21210110211110 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210110211119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6967739 + ... + 9537798.

It is an arithmetic number, because the mean of its divisors is an integer number (1263416406210).

Almost surely, 2^{21210110211110} is an apocalyptic number.

21210110211110 is a deficient number, since it is larger than the sum of its proper divisors (19219214787610).

21210110211110 is a wasteful number, since it uses less digits than its factorization.

21210110211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16513120.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21210110211110 its reverse (1111201101212), we get a palindrome (22321311312322).

The spelling of 21210110211110 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, two hundred eleven thousand, one hundred ten".