21110112112110 has 32 divisors (see below), whose sum is σ = 57902021793792. Its totient is φ = 4825168482720.

The previous prime is 21110112112097. The next prime is 21110112112157. The reversal of 21110112112110 is 1121121101112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21110112112110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50262171486 + ... + 50262171905.

It is an arithmetic number, because the mean of its divisors is an integer number (1809438181056).

Almost surely, 2^{21110112112110} is an apocalyptic number.

21110112112110 is an abundant number, since it is smaller than the sum of its proper divisors (36791909681682).

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

21110112112110 is a wasteful number, since it uses less digits than its factorization.

21110112112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100524343408.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 21110112112110 its reverse (1121121101112), we get a palindrome (22231233213222).

The spelling of 21110112112110 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, one hundred twelve thousand, one hundred ten".