21100110112110 has 16 divisors (see below), whose sum is σ = 50640264269136. Its totient is φ = 5626696029888.

The previous prime is 21100110112087. The next prime is 21100110112127. The reversal of 21100110112110 is 1121101100112.

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 7 ways as a sum of consecutive naturals, for example, 351668501839 + ... + 351668501898.

It is an arithmetic number, because the mean of its divisors is an integer number (3165016516821).

Almost surely, 2^{21100110112110} is an apocalyptic number.

21100110112110 is an abundant number, since it is smaller than the sum of its proper divisors (29540154157026).

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

21100110112110 is a wasteful number, since it uses less digits than its factorization.

21100110112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703337003747.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21100110112110 its reverse (1121101100112), we get a palindrome (22221211212222).

The spelling of 21100110112110 in words is "twenty-one trillion, one hundred billion, one hundred ten million, one hundred twelve thousand, one hundred ten".