121405118 has 8 divisors (see below), whose sum is σ = 182214840. Its totient is φ = 60666840.

The previous prime is 121405093. The next prime is 121405121. The reversal of 121405118 is 811504121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121405093 and 121405102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13388 + ... + 20543.

It is an arithmetic number, because the mean of its divisors is an integer number (22776855).

Almost surely, 2^121405118 is an apocalyptic number.

121405118 is a deficient number, since it is larger than the sum of its proper divisors (60809722).

121405118 is a wasteful number, since it uses less digits than its factorization.

121405118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35722.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 121405118 is about 11018.3990670151. The cubic root of 121405118 is about 495.1601264086.

Adding to 121405118 its reverse (811504121), we get a palindrome (932909239).

The spelling of 121405118 in words is "one hundred twenty-one million, four hundred five thousand, one hundred eighteen".