12135015 has 60 divisors (see below), whose sum is σ = 23234904. Its totient is φ = 6057504.

The previous prime is 12134999. The next prime is 12135017. The reversal of 12135015 is 51053121.

It is not a de Polignac number, because 12135015 - 2⁴ = 12134999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 146164 + ... + 146246.

Almost surely, 2^12135015 is an apocalyptic number.

12135015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12135015 is a deficient number, since it is larger than the sum of its proper divisors (11099889).

12135015 is an equidigital number, since it uses as much as digits as its factorization.

12135015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 12135015 is about 3483.5348426562. The cubic root of 12135015 is about 229.7982793400.

Adding to 12135015 its reverse (51053121), we get a palindrome (63188136).

The spelling of 12135015 in words is "twelve million, one hundred thirty-five thousand, fifteen".