13234212033221 has 2 divisors, whose sum is σ = 13234212033222. Its totient is φ = 13234212033220.

The previous prime is 13234212033187. The next prime is 13234212033269. The reversal of 13234212033221 is 12233021243231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8007547317121 + 5226664716100 = 2829761^2 + 2286190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13234212033221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13234212033271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6617106016610 + 6617106016611.

It is an arithmetic number, because the mean of its divisors is an integer number (6617106016611).

Almost surely, 2^{13234212033221} is an apocalyptic number.

It is an amenable number.

13234212033221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13234212033221 is an equidigital number, since it uses as much as digits as its factorization.

13234212033221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 13234212033221 its reverse (12233021243231), we get a palindrome (25467233276452).

The spelling of 13234212033221 in words is "thirteen trillion, two hundred thirty-four billion, two hundred twelve million, thirty-three thousand, two hundred twenty-one".