12215682 has 12 divisors (see below), whose sum is σ = 26467350. Its totient is φ = 4071888.

The previous prime is 12215681. The next prime is 12215683. The reversal of 12215682 is 28651221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12215681) and next prime (12215683).

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 251001 = 3459^2 + 501^2 .

It is not an unprimeable number, because it can be changed into a prime (12215681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339307 + ... + 339342.

Almost surely, 2^12215682 is an apocalyptic number.

12215682 is an abundant number, since it is smaller than the sum of its proper divisors (14251668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215682 is a wasteful number, since it uses less digits than its factorization.

12215682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678657 (or 678654 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12215682 is about 3495.0939901525. The cubic root of 12215682 is about 230.3063466663.

It can be divided in two parts, 1221 and 5682, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 12215682 in words is "twelve million, two hundred fifteen thousand, six hundred eighty-two".