12212232233 has 4 divisors (see below), whose sum is σ = 12419219280. Its totient is φ = 12005245188.

The previous prime is 12212232229. The next prime is 12212232239. The reversal of 12212232233 is 33223221221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33223221221 = 197 ⋅168645793.

It is not a de Polignac number, because 12212232233 - 2² = 12212232229 is a prime.

It is a super-3 number, since 3×12212232233³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212232199 and 12212232208.

It is not an unprimeable number, because it can be changed into a prime (12212232239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103493435 + ... + 103493552.

It is an arithmetic number, because the mean of its divisors is an integer number (3104804820).

Almost surely, 2^12212232233 is an apocalyptic number.

It is an amenable number.

12212232233 is a deficient number, since it is larger than the sum of its proper divisors (206987047).

12212232233 is an equidigital number, since it uses as much as digits as its factorization.

12212232233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206987046.

The product of its digits is 1728, while the sum is 23.

Adding to 12212232233 its reverse (33223221221), we get a palindrome (45435453454).

The spelling of 12212232233 in words is "twelve billion, two hundred twelve million, two hundred thirty-two thousand, two hundred thirty-three".