12103271 has 2 divisors, whose sum is σ = 12103272.
Its totient is φ = 12103270.
The previous prime is 12103249. The next prime is 12103277. The reversal of 12103271 is 17230121.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 12103271 - 26 = 12103207 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12103277) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051635 + 6051636.
It is an arithmetic number, because the mean of its divisors is an integer number (6051636).
Almost surely, 212103271 is an apocalyptic number.
12103271 is a deficient number, since it is larger than the sum of its proper divisors (1).
12103271 is an equidigital number, since it uses as much as digits as its factorization.
12103271 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 84, while the sum is 17.
The square root of 12103271 is about 3478.9755676061.
The cubic root of 12103271 is about 229.5977278343.
Adding to 12103271 its reverse (17230121), we get a palindrome (29333392).
The spelling of 12103271 in words is "twelve million, one hundred three thousand, two hundred seventy-one".