121201122219959 has 2 divisors, whose sum is σ = 121201122219960. Its totient is φ = 121201122219958.

The previous prime is 121201122219917. The next prime is 121201122220007. The reversal of 121201122219959 is 959912221102121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201122219959 - 2⁸ = 121201122219703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201122215959) 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, 60600561109979 + 60600561109980.

It is an arithmetic number, because the mean of its divisors is an integer number (60600561109980).

Almost surely, 2^{121201122219959} is an apocalyptic number.

121201122219959 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201122219959 is an equidigital number, since it uses as much as digits as its factorization.

121201122219959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 47.

The spelling of 121201122219959 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred nineteen thousand, nine hundred fifty-nine".