12138103 has 2 divisors, whose sum is σ = 12138104. Its totient is φ = 12138102.

The previous prime is 12138097. The next prime is 12138107. The reversal of 12138103 is 30183121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12138103 - 2²¹ = 10040951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12138107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6069051 + 6069052.

It is an arithmetic number, because the mean of its divisors is an integer number (6069052).

Almost surely, 2^12138103 is an apocalyptic number.

12138103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138103 is an equidigital number, since it uses as much as digits as its factorization.

12138103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12138103 is about 3483.9780424107. The cubic root of 12138103 is about 229.8177699602.

It can be divided in two parts, 1213 and 8103, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 12138103 in words is "twelve million, one hundred thirty-eight thousand, one hundred three".