21102202110 has 64 divisors (see below), whose sum is σ = 55264011264. Its totient is φ = 5114332800.

The previous prime is 21102202097. The next prime is 21102202159. The reversal of 21102202110 is 1120220112.

21102202110 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1879032 + ... + 1890228.

It is an arithmetic number, because the mean of its divisors is an integer number (863500176).

Almost surely, 2^21102202110 is an apocalyptic number.

21102202110 is an abundant number, since it is smaller than the sum of its proper divisors (34161809154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102202110 is a wasteful number, since it uses less digits than its factorization.

21102202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16929.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21102202110 its reverse (1120220112), we get a palindrome (22222422222).

The spelling of 21102202110 in words is "twenty-one billion, one hundred two million, two hundred two thousand, one hundred ten".