12011265 has 48 divisors (see below), whose sum is σ = 25204608. Its totient is φ = 5165568.

The previous prime is 12011257. The next prime is 12011281. The reversal of 12011265 is 56211021.

It is not a de Polignac number, because 12011265 - 2³ = 12011257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4234 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (525096).

Almost surely, 2^12011265 is an apocalyptic number.

12011265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12011265 is an abundant number, since it is smaller than the sum of its proper divisors (13193343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011265 is a wasteful number, since it uses less digits than its factorization.

12011265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 12011265 is about 3465.7271964192. The cubic root of 12011265 is about 229.0144661380.

Adding to 12011265 its reverse (56211021), we get a palindrome (68222286).

The spelling of 12011265 in words is "twelve million, eleven thousand, two hundred sixty-five".