12051215 has 16 divisors (see below), whose sum is σ = 16705440. Its totient is φ = 8248320.

The previous prime is 12051209. The next prime is 12051227. The reversal of 12051215 is 51215021.

12051215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12051215 - 2¹⁴ = 12034831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 12051193 and 12051202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5510 + ... + 7379.

It is an arithmetic number, because the mean of its divisors is an integer number (1044090).

Almost surely, 2^12051215 is an apocalyptic number.

12051215 is a deficient number, since it is larger than the sum of its proper divisors (4654225).

12051215 is a wasteful number, since it uses less digits than its factorization.

12051215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12922.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 12051215 is about 3471.4859930583. The cubic root of 12051215 is about 229.2680892481.

Adding to 12051215 its reverse (51215021), we get a palindrome (63266236).

The spelling of 12051215 in words is "twelve million, fifty-one thousand, two hundred fifteen".