21200110020110 has 16 divisors (see below), whose sum is σ = 43611654898656. Its totient is φ = 7268609149728.

The previous prime is 21200110020077. The next prime is 21200110020139. The reversal of 21200110020110 is 1102001100212.

It is a junction number, because it is equal to n+sod(n) for n = 21200110020091 and 21200110020100.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 151429357217 + ... + 151429357356.

It is an arithmetic number, because the mean of its divisors is an integer number (2725728431166).

Almost surely, 2^{21200110020110} is an apocalyptic number.

21200110020110 is an abundant number, since it is smaller than the sum of its proper divisors (22411544878546).

21200110020110 is a wasteful number, since it uses less digits than its factorization.

21200110020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302858714587.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21200110020110 its reverse (1102001100212), we get a palindrome (22302111120322).

The spelling of 21200110020110 in words is "twenty-one trillion, two hundred billion, one hundred ten million, twenty thousand, one hundred ten".