21211100201110 has 16 divisors (see below), whose sum is σ = 38219300647632. Its totient is φ = 8475702239200.

The previous prime is 21211100201087. The next prime is 21211100201117. The reversal of 21211100201110 is 1110200111212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211100201117) 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 7 ways as a sum of consecutive naturals, for example, 1092219961 + ... + 1092239380.

It is an arithmetic number, because the mean of its divisors is an integer number (2388706290477).

Almost surely, 2^{21211100201110} is an apocalyptic number.

21211100201110 is a deficient number, since it is larger than the sum of its proper divisors (17008200446522).

21211100201110 is a wasteful number, since it uses less digits than its factorization.

21211100201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184460319.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21211100201110 its reverse (1110200111212), we get a palindrome (22321300312322).

The spelling of 21211100201110 in words is "twenty-one trillion, two hundred eleven billion, one hundred million, two hundred one thousand, one hundred ten".