13122220010321 has 4 divisors (see below), whose sum is σ = 13122297766500. Its totient is φ = 13122142254144.

The previous prime is 13122220010279. The next prime is 13122220010323. The reversal of 13122220010321 is 12301002222131.

13122220010321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6767484870721 + 6354735139600 = 2601439^2 + 2520860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122220010321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13122220010293 and 13122220010302.

It is not an unprimeable number, because it can be changed into a prime (13122220010323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38624396 + ... + 38962653.

It is an arithmetic number, because the mean of its divisors is an integer number (3280574441625).

Almost surely, 2^{13122220010321} is an apocalyptic number.

It is an amenable number.

13122220010321 is a deficient number, since it is larger than the sum of its proper divisors (77756179).

13122220010321 is an equidigital number, since it uses as much as digits as its factorization.

13122220010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77756178.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13122220010321 its reverse (12301002222131), we get a palindrome (25423222232452).

The spelling of 13122220010321 in words is "thirteen trillion, one hundred twenty-two billion, two hundred twenty million, ten thousand, three hundred twenty-one".