121998368 has 24 divisors (see below), whose sum is σ = 244719468. Its totient is φ = 59847424.

The previous prime is 121998347. The next prime is 121998391. The reversal of 121998368 is 863899121.

It can be written as a sum of positive squares in 2 ways, for example, as 115175824 + 6822544 = 10732^2 + 2612^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34271 + ... + 37662.

Almost surely, 2^121998368 is an apocalyptic number.

It is an amenable number.

121998368 is an abundant number, since it is smaller than the sum of its proper divisors (122721100).

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

121998368 is an equidigital number, since it uses as much as digits as its factorization.

121998368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71996 (or 71988 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 121998368 is about 11045.2871397714. The cubic root of 121998368 is about 495.9653548469.

The spelling of 121998368 in words is "one hundred twenty-one million, nine hundred ninety-eight thousand, three hundred sixty-eight".