13121122012103 has 24 divisors (see below), whose sum is σ = 15553044984240. Its totient is φ = 11033260318080.

The previous prime is 13121122012087. The next prime is 13121122012147. The reversal of 13121122012103 is 30121022112131.

It is not a de Polignac number, because 13121122012103 - 2⁴ = 13121122012087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121122012003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23725508 + ... + 24272246.

It is an arithmetic number, because the mean of its divisors is an integer number (648043541010).

Almost surely, 2^{13121122012103} is an apocalyptic number.

13121122012103 is a deficient number, since it is larger than the sum of its proper divisors (2431922972137).

13121122012103 is an equidigital number, since it uses as much as digits as its factorization.

13121122012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556047 (or 556040 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13121122012103 its reverse (30121022112131), we get a palindrome (43242144124234).

The spelling of 13121122012103 in words is "thirteen trillion, one hundred twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred three".