13112203121 has 2 divisors, whose sum is σ = 13112203122. Its totient is φ = 13112203120.

The previous prime is 13112203109. The next prime is 13112203213. The reversal of 13112203121 is 12130221131.

13112203121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13096513600 + 15689521 = 114440^2 + 3961^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112203121 - 2¹⁰ = 13112202097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13112203121.

It is not a weakly prime, because it can be changed into another prime (13112203421) 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 as a sum of consecutive naturals, namely, 6556101560 + 6556101561.

It is an arithmetic number, because the mean of its divisors is an integer number (6556101561).

Almost surely, 2^13112203121 is an apocalyptic number.

It is an amenable number.

13112203121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112203121 is an equidigital number, since it uses as much as digits as its factorization.

13112203121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 13112203121 its reverse (12130221131), we get a palindrome (25242424252).

The spelling of 13112203121 in words is "thirteen billion, one hundred twelve million, two hundred three thousand, one hundred twenty-one".