121017418 has 4 divisors (see below), whose sum is σ = 181526130. Its totient is φ = 60508708.

The previous prime is 121017401. The next prime is 121017469. The reversal of 121017418 is 814710121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 94731289 + 26286129 = 9733^2 + 5127^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121017392 and 121017401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30254353 + ... + 30254356.

Almost surely, 2^121017418 is an apocalyptic number.

121017418 is a deficient number, since it is larger than the sum of its proper divisors (60508712).

121017418 is an equidigital number, since it uses as much as digits as its factorization.

121017418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60508711.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 121017418 is about 11000.7916987824. The cubic root of 121017418 is about 494.6324762305.

Adding to 121017418 its reverse (814710121), we get a palindrome (935727539).

The spelling of 121017418 in words is "one hundred twenty-one million, seventeen thousand, four hundred eighteen".