16641212 has 12 divisors (see below), whose sum is σ = 33282480. Its totient is φ = 7131936.

The previous prime is 16641211. The next prime is 16641217. The reversal of 16641212 is 21214661.

16641212 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16641211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297137 + ... + 297192.

It is an arithmetic number, because the mean of its divisors is an integer number (2773540).

Almost surely, 2^16641212 is an apocalyptic number.

It is an amenable number.

16641212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16641212 is a wasteful number, since it uses less digits than its factorization.

16641212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594340 (or 594338 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 16641212 is about 4079.3641661416. The cubic root of 16641212 is about 255.3063701975.

Adding to 16641212 its reverse (21214661), we get a palindrome (37855873).

The spelling of 16641212 in words is "sixteen million, six hundred forty-one thousand, two hundred twelve".