21111100200110 has 16 divisors (see below), whose sum is σ = 38046152890656. Its totient is φ = 8434179517728.

The previous prime is 21111100200059. The next prime is 21111100200119. The reversal of 21111100200110 is 1100200111112.

It is a junction number, because it is equal to n+sod(n) for n = 21111100200091 and 21111100200100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111100200119) 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 7 ways as a sum of consecutive naturals, for example, 1282561649 + ... + 1282578108.

It is an arithmetic number, because the mean of its divisors is an integer number (2377884555666).

Almost surely, 2^{21111100200110} is an apocalyptic number.

21111100200110 is a deficient number, since it is larger than the sum of its proper divisors (16935052690546).

21111100200110 is a wasteful number, since it uses less digits than its factorization.

21111100200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565140587.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21111100200110 its reverse (1100200111112), we get a palindrome (22211300311222).

The spelling of 21111100200110 in words is "twenty-one trillion, one hundred eleven billion, one hundred million, two hundred thousand, one hundred ten".