121427449620017 has 16 divisors (see below), whose sum is σ = 127697481600000. Its totient is φ = 115296987435840.

The previous prime is 121427449619899. The next prime is 121427449620157. The reversal of 121427449620017 is 710026944724121.

It is a cyclic number.

It is not a de Polignac number, because 121427449620017 - 2²⁶ = 121427382511153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121427449610017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3217484 + ... + 15912482.

It is an arithmetic number, because the mean of its divisors is an integer number (7981092600000).

Almost surely, 2^{121427449620017} is an apocalyptic number.

It is an amenable number.

121427449620017 is a deficient number, since it is larger than the sum of its proper divisors (6270031979983).

121427449620017 is a wasteful number, since it uses less digits than its factorization.

121427449620017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12700496.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 121427449620017 in words is "one hundred twenty-one trillion, four hundred twenty-seven billion, four hundred forty-nine million, six hundred twenty thousand, seventeen".