13122121013 has 4 divisors (see below), whose sum is σ = 13130626848. Its totient is φ = 13113615180.

The previous prime is 13122120997. The next prime is 13122121027. The reversal of 13122121013 is 31012122131.

13122121013 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13122121013 - 2⁴ = 13122120997 is a prime.

It is a super-2 number, since 2×13122121013² (a number of 21 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 = 13122120982 and 13122121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4250603 + ... + 4253688.

It is an arithmetic number, because the mean of its divisors is an integer number (3282656712).

Almost surely, 2^13122121013 is an apocalyptic number.

It is an amenable number.

13122121013 is a deficient number, since it is larger than the sum of its proper divisors (8505835).

13122121013 is an equidigital number, since it uses as much as digits as its factorization.

13122121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8505834.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13122121013 its reverse (31012122131), we get a palindrome (44134243144).

The spelling of 13122121013 in words is "thirteen billion, one hundred twenty-two million, one hundred twenty-one thousand, thirteen".