121103 has 4 divisors (see below), whose sum is σ = 121800. Its totient is φ = 120408.

The previous prime is 121081. The next prime is 121123. The reversal of 121103 is 301121.

It is a Cunningham number, because it is equal to 348²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 301121 = 17 ⋅17713.

It is a cyclic number.

It is not a de Polignac number, because 121103 - 2⁶ = 121039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123) 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, 173 + ... + 521.

It is an arithmetic number, because the mean of its divisors is an integer number (30450).

2¹²¹¹⁰³ is an apocalyptic number.

121103 is a deficient number, since it is larger than the sum of its proper divisors (697).

121103 is an equidigital number, since it uses as much as digits as its factorization.

121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 121103 is about 347.9985632154. The cubic root of 121103 is about 49.4749048050.

Adding to 121103 its reverse (301121), we get a palindrome (422224).

The spelling of 121103 in words is "one hundred twenty-one thousand, one hundred three", and thus it is an iban number.