121718103 has 8 divisors (see below), whose sum is σ = 174774768. Its totient is φ = 74903424.

The previous prime is 121718101. The next prime is 121718111. The reversal of 121718103 is 301817121.

It is a happy number.

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

It is not a de Polignac number, because 121718103 - 2¹ = 121718101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121718101) 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 7 ways as a sum of consecutive naturals, for example, 1560450 + ... + 1560527.

It is an arithmetic number, because the mean of its divisors is an integer number (21846846).

Almost surely, 2^121718103 is an apocalyptic number.

121718103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121718103 is a deficient number, since it is larger than the sum of its proper divisors (53056665).

121718103 is a wasteful number, since it uses less digits than its factorization.

121718103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120993.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 121718103 is about 11032.5927596372. The cubic root of 121718103 is about 495.5852724171.

The spelling of 121718103 in words is "one hundred twenty-one million, seven hundred eighteen thousand, one hundred three".