121730318 has 8 divisors (see below), whose sum is σ = 183821400. Its totient is φ = 60456520.

The previous prime is 121730317. The next prime is 121730327. The reversal of 121730318 is 813037121.

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

It is a super-2 number, since 2×121730318² = 29636540640762248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121730317) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 203948 + ... + 204543.

It is an arithmetic number, because the mean of its divisors is an integer number (22977675).

Almost surely, 2^121730318 is an apocalyptic number.

121730318 is a deficient number, since it is larger than the sum of its proper divisors (62091082).

121730318 is a wasteful number, since it uses less digits than its factorization.

121730318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408642.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 121730318 is about 11033.1463327557. The cubic root of 121730318 is about 495.6018499884.

Adding to 121730318 its reverse (813037121), we get a palindrome (934767439).

The spelling of 121730318 in words is "one hundred twenty-one million, seven hundred thirty thousand, three hundred eighteen".