121112398 has 8 divisors (see below), whose sum is σ = 198183960. Its totient is φ = 55051080.

The previous prime is 121112377. The next prime is 121112399. The reversal of 121112398 is 893211121.

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

It is a super-3 number, since 3×121112398³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752533 + ... + 2752576.

It is an arithmetic number, because the mean of its divisors is an integer number (24772995).

Almost surely, 2^121112398 is an apocalyptic number.

121112398 is a deficient number, since it is larger than the sum of its proper divisors (77071562).

121112398 is a wasteful number, since it uses less digits than its factorization.

121112398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505122.

The product of its digits is 864, while the sum is 28.

The square root of 121112398 is about 11005.1078141016. The cubic root of 121112398 is about 494.7618457819.

The spelling of 121112398 in words is "one hundred twenty-one million, one hundred twelve thousand, three hundred ninety-eight".