121335105198 has 8 divisors (see below), whose sum is σ = 242670210408. Its totient is φ = 40445035064.

The previous prime is 121335105197. The next prime is 121335105223. The reversal of 121335105198 is 891501533121.

It is a sphenic number, since it is the product of 3 distinct primes.

121335105198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121335105197) 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, 10111258761 + ... + 10111258772.

It is an arithmetic number, because the mean of its divisors is an integer number (30333776301).

Almost surely, 2^121335105198 is an apocalyptic number.

121335105198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121335105198 is a wasteful number, since it uses less digits than its factorization.

121335105198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20222517538.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 121335105198 in words is "one hundred twenty-one billion, three hundred thirty-five million, one hundred five thousand, one hundred ninety-eight".