13200434436221 has 2 divisors, whose sum is σ = 13200434436222. Its totient is φ = 13200434436220.

The previous prime is 13200434436209. The next prime is 13200434436347. The reversal of 13200434436221 is 12263443400231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10572161208196 + 2628273228025 = 3251486^2 + 1621195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13200434436221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13200434456221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600217218110 + 6600217218111.

It is an arithmetic number, because the mean of its divisors is an integer number (6600217218111).

Almost surely, 2^{13200434436221} is an apocalyptic number.

It is an amenable number.

13200434436221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13200434436221 is an equidigital number, since it uses as much as digits as its factorization.

13200434436221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 13200434436221 its reverse (12263443400231), we get a palindrome (25463877836452).

The spelling of 13200434436221 in words is "thirteen trillion, two hundred billion, four hundred thirty-four million, four hundred thirty-six thousand, two hundred twenty-one".