121841965934129 has 16 divisors (see below), whose sum is σ = 141327282919296. Its totient is φ = 102876501340800.

The previous prime is 121841965934123. The next prime is 121841965934141. The reversal of 121841965934129 is 921439569148121.

It is a cyclic number.

It is not a de Polignac number, because 121841965934129 - 2²⁴ = 121841949156913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121841965934123) 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, 72037709 + ... + 73709669.

It is an arithmetic number, because the mean of its divisors is an integer number (8832955182456).

Almost surely, 2^{121841965934129} is an apocalyptic number.

It is an amenable number.

121841965934129 is a deficient number, since it is larger than the sum of its proper divisors (19485316985167).

121841965934129 is a wasteful number, since it uses less digits than its factorization.

121841965934129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827416.

The product of its digits is 33592320, while the sum is 65.

The spelling of 121841965934129 in words is "one hundred twenty-one trillion, eight hundred forty-one billion, nine hundred sixty-five million, nine hundred thirty-four thousand, one hundred twenty-nine".