12222516 has 12 divisors (see below), whose sum is σ = 28519232. Its totient is φ = 4074168.

The previous prime is 12222461. The next prime is 12222517. The reversal of 12222516 is 61522221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12222492 and 12222501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509260 + ... + 509283.

Almost surely, 2^12222516 is an apocalyptic number.

It is an amenable number.

12222516 is an abundant number, since it is smaller than the sum of its proper divisors (16296716).

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

12222516 is a wasteful number, since it uses less digits than its factorization.

12222516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018550 (or 1018548 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 12222516 is about 3496.0715095661. The cubic root of 12222516 is about 230.3492865572.

Adding to 12222516 its reverse (61522221), we get a palindrome (73744737).

The spelling of 12222516 in words is "twelve million, two hundred twenty-two thousand, five hundred sixteen".