121203300209 has 2 divisors, whose sum is σ = 121203300210. Its totient is φ = 121203300208.

The previous prime is 121203300199. The next prime is 121203300241. The reversal of 121203300209 is 902003302121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63288471184 + 57914829025 = 251572^2 + 240655^2 .

It is a cyclic number.

It is not a de Polignac number, because 121203300209 - 2⁴ = 121203300193 is a prime.

It is not a weakly prime, because it can be changed into another prime (121203300259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601650104 + 60601650105.

It is an arithmetic number, because the mean of its divisors is an integer number (60601650105).

Almost surely, 2^121203300209 is an apocalyptic number.

It is an amenable number.

121203300209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121203300209 is an equidigital number, since it uses as much as digits as its factorization.

121203300209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 121203300209 in words is "one hundred twenty-one billion, two hundred three million, three hundred thousand, two hundred nine".