12133215 has 24 divisors (see below), whose sum is σ = 21303360. Its totient is φ = 6387264.

The previous prime is 12133193. The next prime is 12133217. The reversal of 12133215 is 51233121.

It is not a de Polignac number, because 12133215 - 2⁸ = 12132959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1849 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (887640).

Almost surely, 2^12133215 is an apocalyptic number.

12133215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12133215 is a deficient number, since it is larger than the sum of its proper divisors (9170145).

12133215 is a wasteful number, since it uses less digits than its factorization.

12133215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503 (or 3500 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 12133215 is about 3483.2764748151. The cubic root of 12133215 is about 229.7869167018.

Adding to 12133215 its reverse (51233121), we get a palindrome (63366336).

The spelling of 12133215 in words is "twelve million, one hundred thirty-three thousand, two hundred fifteen".