12016215 has 16 divisors (see below), whose sum is σ = 21362400. Its totient is φ = 6408576.

The previous prime is 12016201. The next prime is 12016219. The reversal of 12016215 is 51261021.

It is not a de Polignac number, because 12016215 - 2⁷ = 12016087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12016219) 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, 44370 + ... + 44639.

It is an arithmetic number, because the mean of its divisors is an integer number (1335150).

Almost surely, 2^12016215 is an apocalyptic number.

12016215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12016215 is a deficient number, since it is larger than the sum of its proper divisors (9346185).

12016215 is an equidigital number, since it uses as much as digits as its factorization.

12016215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89023 (or 89017 counting only the distinct ones).

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

The square root of 12016215 is about 3466.4412586975. The cubic root of 12016215 is about 229.0459217734.

Adding to 12016215 its reverse (51261021), we get a palindrome (63277236).

The spelling of 12016215 in words is "twelve million, sixteen thousand, two hundred fifteen".