121200304213243 has 2 divisors, whose sum is σ = 121200304213244. Its totient is φ = 121200304213242.

The previous prime is 121200304213213. The next prime is 121200304213273. The reversal of 121200304213243 is 342312403002121.

It is a balanced prime because it is at equal distance from previous prime (121200304213213) and next prime (121200304213273).

It is a cyclic number.

It is not a de Polignac number, because 121200304213243 - 2¹⁷ = 121200304082171 is a prime.

It is not a weakly prime, because it can be changed into another prime (121200304213213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600152106621 + 60600152106622.

It is an arithmetic number, because the mean of its divisors is an integer number (60600152106622).

Almost surely, 2^{121200304213243} is an apocalyptic number.

121200304213243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200304213243 is an equidigital number, since it uses as much as digits as its factorization.

121200304213243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 121200304213243 its reverse (342312403002121), we get a palindrome (463512707215364).

The spelling of 121200304213243 in words is "one hundred twenty-one trillion, two hundred billion, three hundred four million, two hundred thirteen thousand, two hundred forty-three".