13122420043013 has 4 divisors (see below), whose sum is σ = 13156153771020. Its totient is φ = 13088686315008.

The previous prime is 13122420043003. The next prime is 13122420043039. The reversal of 13122420043013 is 31034002422131.

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 1963493155009 + 11158926888004 = 1401247^2 + 3340498^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122420043013 - 2¹⁰ = 13122420041989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122420043003) 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, 16866863420 + ... + 16866864197.

It is an arithmetic number, because the mean of its divisors is an integer number (3289038442755).

Almost surely, 2^{13122420043013} is an apocalyptic number.

It is an amenable number.

13122420043013 is a deficient number, since it is larger than the sum of its proper divisors (33733728007).

13122420043013 is an equidigital number, since it uses as much as digits as its factorization.

13122420043013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33733728006.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13122420043013 its reverse (31034002422131), we get a palindrome (44156422465144).

The spelling of 13122420043013 in words is "thirteen trillion, one hundred twenty-two billion, four hundred twenty million, forty-three thousand, thirteen".