121030198 has 8 divisors (see below), whose sum is σ = 183417192. Its totient is φ = 59891136.

The previous prime is 121030193. The next prime is 121030213. The reversal of 121030198 is 891030121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030193) 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, 311740 + ... + 312127.

It is an arithmetic number, because the mean of its divisors is an integer number (22927149).

Almost surely, 2^121030198 is an apocalyptic number.

121030198 is a deficient number, since it is larger than the sum of its proper divisors (62386994).

121030198 is an equidigital number, since it uses as much as digits as its factorization.

121030198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623966.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 121030198 is about 11001.3725507320. The cubic root of 121030198 is about 494.6498874447.

The spelling of 121030198 in words is "one hundred twenty-one million, thirty thousand, one hundred ninety-eight".