1200120312103 has 2 divisors, whose sum is σ = 1200120312104. Its totient is φ = 1200120312102.

The previous prime is 1200120312091. The next prime is 1200120312113. The reversal of 1200120312103 is 3012130210021.

It is a strong prime.

It is an emirp because it is prime and its reverse (3012130210021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200120312103 - 2¹³ = 1200120303911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200120312113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600060156051 + 600060156052.

It is an arithmetic number, because the mean of its divisors is an integer number (600060156052).

Almost surely, 2^{1200120312103} is an apocalyptic number.

1200120312103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200120312103 is an equidigital number, since it uses as much as digits as its factorization.

1200120312103 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 16.

Adding to 1200120312103 its reverse (3012130210021), we get a palindrome (4212250522124).

The spelling of 1200120312103 in words is "one trillion, two hundred billion, one hundred twenty million, three hundred twelve thousand, one hundred three".