12122121103 has 2 divisors, whose sum is σ = 12122121104. Its totient is φ = 12122121102.

The previous prime is 12122121071. The next prime is 12122121149. The reversal of 12122121103 is 30112122121.

12122121103 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 is a cyclic number.

It is not a de Polignac number, because 12122121103 - 2⁵ = 12122121071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122121203) 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, 6061060551 + 6061060552.

It is an arithmetic number, because the mean of its divisors is an integer number (6061060552).

Almost surely, 2^12122121103 is an apocalyptic number.

12122121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122121103 is an equidigital number, since it uses as much as digits as its factorization.

12122121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12122121103 its reverse (30112122121), we get a palindrome (42234243224).

It can be divided in two parts, 12122 and 121103, that added together give a square (133225 = 365²).

The spelling of 12122121103 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred three".