121005418 has 8 divisors (see below), whose sum is σ = 181576512. Its totient is φ = 60479916.

The previous prime is 121005407. The next prime is 121005419. The reversal of 121005418 is 814500121.

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

It is a super-2 number, since 2×121005418² = 29284622370709448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121005419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3730 + ... + 15997.

It is an arithmetic number, because the mean of its divisors is an integer number (22697064).

Almost surely, 2^121005418 is an apocalyptic number.

121005418 is a deficient number, since it is larger than the sum of its proper divisors (60571094).

121005418 is a wasteful number, since it uses less digits than its factorization.

121005418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22796.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 121005418 is about 11000.2462699705. The cubic root of 121005418 is about 494.6161265568.

Adding to 121005418 its reverse (814500121), we get a palindrome (935505539).

The spelling of 121005418 in words is "one hundred twenty-one million, five thousand, four hundred eighteen".