12121103113 has 4 divisors (see below), whose sum is σ = 13852689280. Its totient is φ = 10389516948.

The previous prime is 12121103089. The next prime is 12121103119. The reversal of 12121103113 is 31130112121.

It is a happy number.

12121103113 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 12121103113 - 2⁵ = 12121103081 is a prime.

It is a super-2 number, since 2×12121103113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121103119) 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, 865793073 + ... + 865793086.

It is an arithmetic number, because the mean of its divisors is an integer number (3463172320).

Almost surely, 2^12121103113 is an apocalyptic number.

It is an amenable number.

12121103113 is a deficient number, since it is larger than the sum of its proper divisors (1731586167).

12121103113 is an equidigital number, since it uses as much as digits as its factorization.

12121103113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731586166.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12121103113 its reverse (31130112121), we get a palindrome (43251215234).

The spelling of 12121103113 in words is "twelve billion, one hundred twenty-one million, one hundred three thousand, one hundred thirteen".