12015261 has 12 divisors (see below), whose sum is σ = 17397120. Its totient is φ = 7990920.

The previous prime is 12015257. The next prime is 12015271. The reversal of 12015261 is 16251021.

It is not a de Polignac number, because 12015261 - 2² = 12015257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015271) 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, 3060 + ... + 5778.

It is an arithmetic number, because the mean of its divisors is an integer number (1449760).

Almost surely, 2^12015261 is an apocalyptic number.

It is an amenable number.

12015261 is a deficient number, since it is larger than the sum of its proper divisors (5381859).

12015261 is a wasteful number, since it uses less digits than its factorization.

12015261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3213 counting only the distinct ones).

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

The square root of 12015261 is about 3466.3036508650. The cubic root of 12015261 is about 229.0398600867.

Adding to 12015261 its reverse (16251021), we get a palindrome (28266282).

The spelling of 12015261 in words is "twelve million, fifteen thousand, two hundred sixty-one".