13122011320331 has 4 divisors (see below), whose sum is σ = 13893894339192. Its totient is φ = 12350128301472.

The previous prime is 13122011320289. The next prime is 13122011320351. The reversal of 13122011320331 is 13302311022131.

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

It is a cyclic number.

It is not a de Polignac number, because 13122011320331 - 2¹⁸ = 13122011058187 is a prime.

It is a super-2 number, since 2×13122011320331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13122011320297 and 13122011320306.

It is not an unprimeable number, because it can be changed into a prime (13122011320351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385941509405 + ... + 385941509438.

It is an arithmetic number, because the mean of its divisors is an integer number (3473473584798).

Almost surely, 2^{13122011320331} is an apocalyptic number.

13122011320331 is a deficient number, since it is larger than the sum of its proper divisors (771883018861).

13122011320331 is an equidigital number, since it uses as much as digits as its factorization.

13122011320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771883018860.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13122011320331 its reverse (13302311022131), we get a palindrome (26424322342462).

The spelling of 13122011320331 in words is "thirteen trillion, one hundred twenty-two billion, eleven million, three hundred twenty thousand, three hundred thirty-one".