12033323221 has 2 divisors, whose sum is σ = 12033323222. Its totient is φ = 12033323220.

The previous prime is 12033323209. The next prime is 12033323251. The reversal of 12033323221 is 12232333021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11912631025 + 120692196 = 109145^2 + 10986^2 .

It is an emirp because it is prime and its reverse (12232333021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12033323221 - 2⁵ = 12033323189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12033323192 and 12033323201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12033323251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6016661610 + 6016661611.

It is an arithmetic number, because the mean of its divisors is an integer number (6016661611).

Almost surely, 2^12033323221 is an apocalyptic number.

It is an amenable number.

12033323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12033323221 is an equidigital number, since it uses as much as digits as its factorization.

12033323221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 12033323221 its reverse (12232333021), we get a palindrome (24265656242).

The spelling of 12033323221 in words is "twelve billion, thirty-three million, three hundred twenty-three thousand, two hundred twenty-one".