13200021010321 has 2 divisors, whose sum is σ = 13200021010322. Its totient is φ = 13200021010320.

The previous prime is 13200021010283. The next prime is 13200021010343. The reversal of 13200021010321 is 12301012000231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9009218359296 + 4190802651025 = 3001536^2 + 2047145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13200021010321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13200021010295 and 13200021010304.

It is not a weakly prime, because it can be changed into another prime (13200021010361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600010505160 + 6600010505161.

It is an arithmetic number, because the mean of its divisors is an integer number (6600010505161).

Almost surely, 2^{13200021010321} is an apocalyptic number.

It is an amenable number.

13200021010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13200021010321 is an equidigital number, since it uses as much as digits as its factorization.

13200021010321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13200021010321 its reverse (12301012000231), we get a palindrome (25501033010552).

The spelling of 13200021010321 in words is "thirteen trillion, two hundred billion, twenty-one million, ten thousand, three hundred twenty-one".