121458228347 has 2 divisors, whose sum is σ = 121458228348. Its totient is φ = 121458228346.

The previous prime is 121458228343. The next prime is 121458228349. The reversal of 121458228347 is 743822854121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121458228347 - 2² = 121458228343 is a prime.

Together with 121458228349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121458228341) 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, 60729114173 + 60729114174.

It is an arithmetic number, because the mean of its divisors is an integer number (60729114174).

Almost surely, 2^121458228347 is an apocalyptic number.

121458228347 is a deficient number, since it is larger than the sum of its proper divisors (1).

121458228347 is an equidigital number, since it uses as much as digits as its factorization.

121458228347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 47.

The spelling of 121458228347 in words is "one hundred twenty-one billion, four hundred fifty-eight million, two hundred twenty-eight thousand, three hundred forty-seven".