21212100200110 has 16 divisors (see below), whose sum is σ = 38704818448656. Its totient is φ = 8368609393728.

The previous prime is 21212100200089. The next prime is 21212100200111. The reversal of 21212100200110 is 1100200121212.

It is a super-3 number, since 3×21212100200110³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212100200111) 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, 14528835024 + ... + 14528836483.

It is an arithmetic number, because the mean of its divisors is an integer number (2419051153041).

Almost surely, 2^{21212100200110} is an apocalyptic number.

21212100200110 is a deficient number, since it is larger than the sum of its proper divisors (17492718248546).

21212100200110 is a wasteful number, since it uses less digits than its factorization.

21212100200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29057671587.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21212100200110 its reverse (1100200121212), we get a palindrome (22312300321322).

The spelling of 21212100200110 in words is "twenty-one trillion, two hundred twelve billion, one hundred million, two hundred thousand, one hundred ten".