21101210211110 has 32 divisors (see below), whose sum is σ = 38066404076064. Its totient is φ = 8421773472000.

The previous prime is 21101210211091. The next prime is 21101210211113. The reversal of 21101210211110 is 1111201210112.

It is a super-2 number, since 2×21101210211110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101210211113) 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 15 ways as a sum of consecutive naturals, for example, 27017690 + ... + 27787730.

It is an arithmetic number, because the mean of its divisors is an integer number (1189575127377).

Almost surely, 2^{21101210211110} is an apocalyptic number.

21101210211110 is a deficient number, since it is larger than the sum of its proper divisors (16965193864954).

21101210211110 is a wasteful number, since it uses less digits than its factorization.

21101210211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776120.

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

Adding to 21101210211110 its reverse (1111201210112), we get a palindrome (22212411421222).

The spelling of 21101210211110 in words is "twenty-one trillion, one hundred one billion, two hundred ten million, two hundred eleven thousand, one hundred ten".