121544103 has 8 divisors (see below), whose sum is σ = 163029888. Its totient is φ = 80543864.

The previous prime is 121544099. The next prime is 121544123. The reversal of 121544103 is 301445121.

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

It is a cyclic number.

It is not a de Polignac number, because 121544103 - 2² = 121544099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121544103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121544123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120801 + ... + 121802.

It is an arithmetic number, because the mean of its divisors is an integer number (20378736).

Almost surely, 2^121544103 is an apocalyptic number.

121544103 is a deficient number, since it is larger than the sum of its proper divisors (41485785).

121544103 is a wasteful number, since it uses less digits than its factorization.

121544103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242773.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 121544103 is about 11024.7042137193. The cubic root of 121544103 is about 495.3490080260.

Adding to 121544103 its reverse (301445121), we get a palindrome (422989224).

The spelling of 121544103 in words is "one hundred twenty-one million, five hundred forty-four thousand, one hundred three".