12150015 has 16 divisors (see below), whose sum is σ = 19526496. Its totient is φ = 6451200.

The previous prime is 12150011. The next prime is 12150029. The reversal of 12150015 is 51005121.

It is not a de Polignac number, because 12150015 - 2² = 12150011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 12149976 and 12150003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12150011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 5295.

It is an arithmetic number, because the mean of its divisors is an integer number (1220406).

Almost surely, 2^12150015 is an apocalyptic number.

12150015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12150015 is a deficient number, since it is larger than the sum of its proper divisors (7376481).

12150015 is a wasteful number, since it uses less digits than its factorization.

12150015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 12150015 is about 3485.6871632434. The cubic root of 12150015 is about 229.8929243241.

Adding to 12150015 its reverse (51005121), we get a palindrome (63155136).

It can be divided in two parts, 121500 and 15, that multiplied together give a square (1822500 = 1350²).

The spelling of 12150015 in words is "twelve million, one hundred fifty thousand, fifteen".