21100112210223 has 24 divisors (see below), whose sum is σ = 31357266231408. Its totient is φ = 13662249098112.

The previous prime is 21100112210201. The next prime is 21100112210251. The reversal of 21100112210223 is 32201221100112.

21100112210223 is a `hidden beast` number, since 21 + 100 + 112 + 210 + 223 = 666.

It is not a de Polignac number, because 21100112210223 - 2⁴⁰ = 20000600582447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21100112210196 and 21100112210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100112210263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56085790 + ... + 56460747.

It is an arithmetic number, because the mean of its divisors is an integer number (1306552759642).

Almost surely, 2^{21100112210223} is an apocalyptic number.

21100112210223 is a deficient number, since it is larger than the sum of its proper divisors (10257154021185).

21100112210223 is a wasteful number, since it uses less digits than its factorization.

21100112210223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112547143 (or 112547140 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21100112210223 its reverse (32201221100112), we get a palindrome (53301333310335).

It can be divided in two parts, 2110011 and 2210223, that added together give a palindrome (4320234).

The spelling of 21100112210223 in words is "twenty-one trillion, one hundred billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-three".