121481718 has 8 divisors (see below), whose sum is σ = 242963448. Its totient is φ = 40493904.

The previous prime is 121481713. The next prime is 121481719. The reversal of 121481718 is 817184121.

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

121481718 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121481713) 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, 10123471 + ... + 10123482.

It is an arithmetic number, because the mean of its divisors is an integer number (30370431).

Almost surely, 2^121481718 is an apocalyptic number.

121481718 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121481718 is a wasteful number, since it uses less digits than its factorization.

121481718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20246958.

The product of its digits is 3584, while the sum is 33.

The square root of 121481718 is about 11021.8745229657. The cubic root of 121481718 is about 495.2642441811.

The spelling of 121481718 in words is "one hundred twenty-one million, four hundred eighty-one thousand, seven hundred eighteen".