21110122101112 has 64 divisors (see below), whose sum is σ = 43616803276800. Its totient is φ = 9498438480000.

The previous prime is 21110122101097. The next prime is 21110122101121.

21110122101112 is nontrivially palindromic in base 10.

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, 40975437 + ... + 41487427.

It is an arithmetic number, because the mean of its divisors is an integer number (681512551200).

Almost surely, 2^{21110122101112} is an apocalyptic number.

21110122101112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21110122101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21808401638400).

21110122101112 is an abundant number, since it is smaller than the sum of its proper divisors (22506681175688).

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

21110122101112 is a wasteful number, since it uses less digits than its factorization.

21110122101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516748 (or 516744 counting only the distinct ones).

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

It can be divided in two parts, 2111012 and 2101112, that added together give a palindrome (4212124).

The spelling of 21110122101112 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-two million, one hundred one thousand, one hundred twelve".