121418998 has 16 divisors (see below), whose sum is σ = 199493280. Its totient is φ = 55167616.

The previous prime is 121418989. The next prime is 121419007. The reversal of 121418998 is 899814121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121418989) and next prime (121419007).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60586 + ... + 62557.

It is an arithmetic number, because the mean of its divisors is an integer number (12468330).

Almost surely, 2^121418998 is an apocalyptic number.

121418998 is a deficient number, since it is larger than the sum of its proper divisors (78074282).

121418998 is a wasteful number, since it uses less digits than its factorization.

121418998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123191.

The product of its digits is 41472, while the sum is 43.

The square root of 121418998 is about 11019.0289045814. The cubic root of 121418998 is about 495.1789959059.

The spelling of 121418998 in words is "one hundred twenty-one million, four hundred eighteen thousand, nine hundred ninety-eight".