12234453405221 has 2 divisors, whose sum is σ = 12234453405222. Its totient is φ = 12234453405220.

The previous prime is 12234453405199. The next prime is 12234453405253. The reversal of 12234453405221 is 12250435443221.

12234453405221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12232429305121 + 2024100100 = 3497489^2 + 44990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12234453405221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12234453405521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6117226702610 + 6117226702611.

It is an arithmetic number, because the mean of its divisors is an integer number (6117226702611).

Almost surely, 2^{12234453405221} is an apocalyptic number.

It is an amenable number.

12234453405221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12234453405221 is an equidigital number, since it uses as much as digits as its factorization.

12234453405221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 12234453405221 its reverse (12250435443221), we get a palindrome (24484888848442).

The spelling of 12234453405221 in words is "twelve trillion, two hundred thirty-four billion, four hundred fifty-three million, four hundred five thousand, two hundred twenty-one".