12200644 has 12 divisors (see below), whose sum is σ = 21380800. Its totient is φ = 6091848.

The previous prime is 12200621. The next prime is 12200647. The reversal of 12200644 is 44600221.

It is not an unprimeable number, because it can be changed into a prime (12200647) 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 3 ways as a sum of consecutive naturals, for example, 2017 + ... + 5335.

Almost surely, 2^12200644 is an apocalyptic number.

It is an amenable number.

12200644 is a deficient number, since it is larger than the sum of its proper divisors (9180156).

12200644 is a wasteful number, since it uses less digits than its factorization.

12200644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242 (or 4240 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12200644 is about 3492.9420264299. The cubic root of 12200644 is about 230.2118023751.

Adding to 12200644 its reverse (44600221), we get a palindrome (56800865).

The spelling of 12200644 in words is "twelve million, two hundred thousand, six hundred forty-four".