12071515 has 8 divisors (see below), whose sum is σ = 14649120. Its totient is φ = 9548352.

The previous prime is 12071503. The next prime is 12071531. The reversal of 12071515 is 51517021.

12071515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12071515 - 2⁷ = 12071387 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13119 + ... + 14008.

It is an arithmetic number, because the mean of its divisors is an integer number (1831140).

Almost surely, 2^12071515 is an apocalyptic number.

12071515 is a deficient number, since it is larger than the sum of its proper divisors (2577605).

12071515 is an equidigital number, since it uses as much as digits as its factorization.

12071515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27221.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 12071515 is about 3474.4085827663. The cubic root of 12071515 is about 229.3967493428.

Adding to 12071515 its reverse (51517021), we get a palindrome (63588536).

The spelling of 12071515 in words is "twelve million, seventy-one thousand, five hundred fifteen".