121212200122103 has 2 divisors, whose sum is σ = 121212200122104. Its totient is φ = 121212200122102.

The previous prime is 121212200122093. The next prime is 121212200122127. The reversal of 121212200122103 is 301221002212121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121212200122103 - 2²⁸ = 121211931686647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212200182103) 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 as a sum of consecutive naturals, namely, 60606100061051 + 60606100061052.

It is an arithmetic number, because the mean of its divisors is an integer number (60606100061052).

Almost surely, 2^{121212200122103} is an apocalyptic number.

121212200122103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212200122103 is an equidigital number, since it uses as much as digits as its factorization.

121212200122103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121212200122103 its reverse (301221002212121), we get a palindrome (422433202334224).

The spelling of 121212200122103 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred million, one hundred twenty-two thousand, one hundred three".