12011212321103 has 2 divisors, whose sum is σ = 12011212321104. Its totient is φ = 12011212321102.

The previous prime is 12011212321099. The next prime is 12011212321123. The reversal of 12011212321103 is 30112321211021.

It is an a-pointer prime, because the next prime (12011212321123) can be obtained adding 12011212321103 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011212321103 - 2² = 12011212321099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011212321123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005606160551 + 6005606160552.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606160552).

Almost surely, 2^{12011212321103} is an apocalyptic number.

12011212321103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011212321103 is an equidigital number, since it uses as much as digits as its factorization.

12011212321103 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12011212321103 its reverse (30112321211021), we get a palindrome (42123533532124).

The spelling of 12011212321103 in words is "twelve trillion, eleven billion, two hundred twelve million, three hundred twenty-one thousand, one hundred three".