13122303552521 has 16 divisors (see below), whose sum is σ = 13913578137600. Its totient is φ = 12356996174208.

The previous prime is 13122303552401. The next prime is 13122303552539. The reversal of 13122303552521 is 12525530322131.

It is a de Polignac number, because none of the positive numbers 2^k-13122303552521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122303552221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29977100 + ... + 30411693.

It is an arithmetic number, because the mean of its divisors is an integer number (869598633600).

Almost surely, 2^{13122303552521} is an apocalyptic number.

It is an amenable number.

13122303552521 is a deficient number, since it is larger than the sum of its proper divisors (791274585079).

13122303552521 is a wasteful number, since it uses less digits than its factorization.

13122303552521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60389008.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 13122303552521 its reverse (12525530322131), we get a palindrome (25647833874652).

The spelling of 13122303552521 in words is "thirteen trillion, one hundred twenty-two billion, three hundred three million, five hundred fifty-two thousand, five hundred twenty-one".