12222636 has 24 divisors (see below), whose sum is σ = 28579824. Its totient is φ = 4065600.

The previous prime is 12222629. The next prime is 12222641. The reversal of 12222636 is 63622221.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7686 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (1190826).

Almost surely, 2^12222636 is an apocalyptic number.

It is an amenable number.

12222636 is an abundant number, since it is smaller than the sum of its proper divisors (16357188).

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

12222636 is a wasteful number, since it uses less digits than its factorization.

12222636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161 (or 2159 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 12222636 is about 3496.0886716444. The cubic root of 12222636 is about 230.3500404070.

Adding to 12222636 its reverse (63622221), we get a palindrome (75844857).

The spelling of 12222636 in words is "twelve million, two hundred twenty-two thousand, six hundred thirty-six".