121204293846439 has 2 divisors, whose sum is σ = 121204293846440. Its totient is φ = 121204293846438.

The previous prime is 121204293846379. The next prime is 121204293846481. The reversal of 121204293846439 is 934648392402121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121204293846439 - 2¹⁷ = 121204293715367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121204293846539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60602146923219 + 60602146923220.

It is an arithmetic number, because the mean of its divisors is an integer number (60602146923220).

Almost surely, 2^{121204293846439} is an apocalyptic number.

121204293846439 is a deficient number, since it is larger than the sum of its proper divisors (1).

121204293846439 is an equidigital number, since it uses as much as digits as its factorization.

121204293846439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17915904, while the sum is 58.

The spelling of 121204293846439 in words is "one hundred twenty-one trillion, two hundred four billion, two hundred ninety-three million, eight hundred forty-six thousand, four hundred thirty-nine".