12233210221 has 6 divisors (see below), whose sum is σ = 12538860266. Its totient is φ = 11934837600.

The previous prime is 12233210207. The next prime is 12233210233. The reversal of 12233210221 is 12201233221.

It can be written as a sum of positive squares in 3 ways, for example, as 666207721 + 11567002500 = 25811^2 + 107550^2 .

It is not a de Polignac number, because 12233210221 - 2²³ = 12224821613 is a prime.

It is a super-2 number, since 2×12233210221² (a number of 21 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 (12233210201) 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, 3636990 + ... + 3640351.

Almost surely, 2^12233210221 is an apocalyptic number.

It is an amenable number.

12233210221 is a deficient number, since it is larger than the sum of its proper divisors (305650045).

12233210221 is an frugal number, since it uses more digits than its factorization.

12233210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7277423 (or 7277382 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12233210221 its reverse (12201233221), we get a palindrome (24434443442).

The spelling of 12233210221 in words is "twelve billion, two hundred thirty-three million, two hundred ten thousand, two hundred twenty-one".