12001775 has 6 divisors (see below), whose sum is σ = 14882232. Its totient is φ = 9601400.

The previous prime is 12001763. The next prime is 12001799. The reversal of 12001775 is 57710021.

It is a happy number.

12001775 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 12001775 - 2¹² = 11997679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12001775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240011 + ... + 240060.

It is an arithmetic number, because the mean of its divisors is an integer number (2480372).

Almost surely, 2^12001775 is an apocalyptic number.

12001775 is a deficient number, since it is larger than the sum of its proper divisors (2880457).

12001775 is an equidigital number, since it uses as much as digits as its factorization.

12001775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480081 (or 480076 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 12001775 is about 3464.3578048464. The cubic root of 12001775 is about 228.9541361085.

Adding to 12001775 its reverse (57710021), we get a palindrome (69711796).

The spelling of 12001775 in words is "twelve million, one thousand, seven hundred seventy-five".