21110100111223 has 8 divisors (see below), whose sum is σ = 21200940742176. Its totient is φ = 21019261526400.

The previous prime is 21110100111161. The next prime is 21110100111299. The reversal of 21110100111223 is 32211100101112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21110100111223 - 2¹³ = 21110100103031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110100111197 and 21110100111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110100181223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22362478 + ... + 23287348.

It is an arithmetic number, because the mean of its divisors is an integer number (2650117592772).

Almost surely, 2^{21110100111223} is an apocalyptic number.

21110100111223 is a deficient number, since it is larger than the sum of its proper divisors (90840630953).

21110100111223 is an equidigital number, since it uses as much as digits as its factorization.

21110100111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023065.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21110100111223 its reverse (32211100101112), we get a palindrome (53321200212335).

The spelling of 21110100111223 in words is "twenty-one trillion, one hundred ten billion, one hundred million, one hundred eleven thousand, two hundred twenty-three".