12155103 has 12 divisors (see below), whose sum is σ = 18208008. Its totient is φ = 8103240.

The previous prime is 12155081. The next prime is 12155123. The reversal of 12155103 is 30155121.

12155103 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12155103 - 2²⁰ = 11106527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24768 + ... + 25253.

It is an arithmetic number, because the mean of its divisors is an integer number (1517334).

Almost surely, 2^12155103 is an apocalyptic number.

12155103 is a deficient number, since it is larger than the sum of its proper divisors (6052905).

12155103 is an frugal number, since it uses more digits than its factorization.

12155103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50036 (or 50024 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 12155103 is about 3486.4169285959. The cubic root of 12155103 is about 229.9250102094.

Adding to 12155103 its sum of digits (18), we get a palindrome (12155121).

The spelling of 12155103 in words is "twelve million, one hundred fifty-five thousand, one hundred three".