121884493771289 has 4 divisors (see below), whose sum is σ = 127183819587456. Its totient is φ = 116585167955124.

The previous prime is 121884493771279. The next prime is 121884493771301. The reversal of 121884493771289 is 982177394488121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121884493771289 - 2¹⁶ = 121884493705753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121884493771279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2649662908049 + ... + 2649662908094.

It is an arithmetic number, because the mean of its divisors is an integer number (31795954896864).

Almost surely, 2^{121884493771289} is an apocalyptic number.

It is an amenable number.

121884493771289 is a deficient number, since it is larger than the sum of its proper divisors (5299325816167).

121884493771289 is an equidigital number, since it uses as much as digits as its factorization.

121884493771289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299325816166.

The product of its digits is 390168576, while the sum is 74.

The spelling of 121884493771289 in words is "one hundred twenty-one trillion, eight hundred eighty-four billion, four hundred ninety-three million, seven hundred seventy-one thousand, two hundred eighty-nine".