12215132 has 6 divisors (see below), whose sum is σ = 21376488. Its totient is φ = 6107564.

The previous prime is 12215131. The next prime is 12215141. The reversal of 12215132 is 23151221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12215132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215131) 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 as a sum of consecutive naturals, namely, 1526888 + ... + 1526895.

It is an arithmetic number, because the mean of its divisors is an integer number (3562748).

Almost surely, 2^12215132 is an apocalyptic number.

It is an amenable number.

12215132 is a deficient number, since it is larger than the sum of its proper divisors (9161356).

12215132 is a wasteful number, since it uses less digits than its factorization.

12215132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053787 (or 3053785 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 12215132 is about 3495.0153075487. The cubic root of 12215132 is about 230.3028901696.

Adding to 12215132 its reverse (23151221), we get a palindrome (35366353).

The spelling of 12215132 in words is "twelve million, two hundred fifteen thousand, one hundred thirty-two".