121103918 has 32 divisors (see below), whose sum is σ = 204153600. Its totient is φ = 53498880.

The previous prime is 121103911. The next prime is 121103921. The reversal of 121103918 is 819301121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103911) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 77408 + ... + 78956.

It is an arithmetic number, because the mean of its divisors is an integer number (6379800).

Almost surely, 2^121103918 is an apocalyptic number.

121103918 is a deficient number, since it is larger than the sum of its proper divisors (83049682).

121103918 is a wasteful number, since it uses less digits than its factorization.

121103918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 121103918 is about 11004.7225317134. The cubic root of 121103918 is about 494.7502981659.

The spelling of 121103918 in words is "one hundred twenty-one million, one hundred three thousand, nine hundred eighteen".