21210112033223 has 8 divisors (see below), whose sum is σ = 21560230461696. Its totient is φ = 20860071400800.

The previous prime is 21210112033207. The next prime is 21210112033237. The reversal of 21210112033223 is 32233021101212.

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 21210112033223 - 2⁴ = 21210112033207 is a prime.

It is a super-2 number, since 2×21210112033223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210112039223) 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, 18899111 + ... + 19989912.

It is an arithmetic number, because the mean of its divisors is an integer number (2695028807712).

Almost surely, 2^{21210112033223} is an apocalyptic number.

21210112033223 is a deficient number, since it is larger than the sum of its proper divisors (350118428473).

21210112033223 is an equidigital number, since it uses as much as digits as its factorization.

21210112033223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38898025.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21210112033223 its reverse (32233021101212), we get a palindrome (53443133134435).

The spelling of 21210112033223 in words is "twenty-one trillion, two hundred ten billion, one hundred twelve million, thirty-three thousand, two hundred twenty-three".