12013775 has 12 divisors (see below), whose sum is σ = 15179832. Its totient is φ = 9428640.

The previous prime is 12013769. The next prime is 12013777. The reversal of 12013775 is 57731021.

It is not a de Polignac number, because 12013775 - 2⁴ = 12013759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013777) 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, 3209 + ... + 5858.

It is an arithmetic number, because the mean of its divisors is an integer number (1264986).

Almost surely, 2^12013775 is an apocalyptic number.

12013775 is a deficient number, since it is larger than the sum of its proper divisors (3166057).

12013775 is an equidigital number, since it uses as much as digits as its factorization.

12013775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130 (or 9125 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 12013775 is about 3466.0892948682. The cubic root of 12013775 is about 229.0304174491.

Adding to 12013775 its reverse (57731021), we get a palindrome (69744796).

The spelling of 12013775 in words is "twelve million, thirteen thousand, seven hundred seventy-five".