21233210112233 has 6 divisors (see below), whose sum is σ = 24699856661226. Its totient is φ = 18199894381872.

The previous prime is 21233210112217. The next prime is 21233210112239. The reversal of 21233210112233 is 33221101233212.

It can be written as a sum of positive squares in only one way, i.e., 17233358110864 + 3999852001369 = 4151308^2 + 1999963^2 .

It is not a de Polignac number, because 21233210112233 - 2⁴ = 21233210112217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233210112239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216665409260 + ... + 216665409357.

It is an arithmetic number, because the mean of its divisors is an integer number (4116642776871).

Almost surely, 2^{21233210112233} is an apocalyptic number.

It is an amenable number.

21233210112233 is a deficient number, since it is larger than the sum of its proper divisors (3466646548993).

21233210112233 is an equidigital number, since it uses as much as digits as its factorization.

21233210112233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433330818631 (or 433330818624 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21233210112233 its reverse (33221101233212), we get a palindrome (54454311345445).

The spelling of 21233210112233 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred ten million, one hundred twelve thousand, two hundred thirty-three".