121110918 has 16 divisors (see below), whose sum is σ = 244621296. Its totient is φ = 39970400.

The previous prime is 121110911. The next prime is 121110929. The reversal of 121110918 is 819011121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99321 + ... + 100532.

It is an arithmetic number, because the mean of its divisors is an integer number (15288831).

Almost surely, 2^121110918 is an apocalyptic number.

121110918 is an abundant number, since it is smaller than the sum of its proper divisors (123510378).

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

121110918 is a wasteful number, since it uses less digits than its factorization.

121110918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199959.

The product of its (nonzero) digits is 144, while the sum is 24.

The square root of 121110918 is about 11005.0405723923. The cubic root of 121110918 is about 494.7598304349.

The spelling of 121110918 in words is "one hundred twenty-one million, one hundred ten thousand, nine hundred eighteen".