12101863 has 2 divisors, whose sum is σ = 12101864.
Its totient is φ = 12101862.
The previous prime is 12101857. The next prime is 12101891. The reversal of 12101863 is 36810121.
It is a weak prime.
It is an emirp because it is prime and its reverse (36810121) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12101863 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12101813) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050931 + 6050932.
It is an arithmetic number, because the mean of its divisors is an integer number (6050932).
Almost surely, 212101863 is an apocalyptic number.
12101863 is a deficient number, since it is larger than the sum of its proper divisors (1).
12101863 is an equidigital number, since it uses as much as digits as its factorization.
12101863 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 288, while the sum is 22.
The square root of 12101863 is about 3478.7732033003.
The cubic root of 12101863 is about 229.5888242870.
Adding to 12101863 its reverse (36810121), we get a palindrome (48911984).
The spelling of 12101863 in words is "twelve million, one hundred one thousand, eight hundred sixty-three".