12212132 has 12 divisors (see below), whose sum is σ = 22108380.
Its totient is φ = 5895456.
The previous prime is 12212131. The next prime is 12212141. The reversal of 12212132 is 23121221.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 6180196 + 6031936 = 2486^2 + 2456^2
It is not an unprimeable number, because it can be changed into a prime (12212131) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52523 + ... + 52754.
It is an arithmetic number, because the mean of its divisors is an integer number (1842365).
Almost surely, 212212132 is an apocalyptic number.
It is an amenable number.
12212132 is a deficient number, since it is larger than the sum of its proper divisors (9896248).
12212132 is a wasteful number, since it uses less digits than its factorization.
12212132 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 105310 (or 105308 counting only the distinct ones).
The product of its digits is 48, while the sum is 14.
The square root of 12212132 is about 3494.5860985244.
The cubic root of 12212132 is about 230.2840347249.
Adding to 12212132 its reverse (23121221), we get a palindrome (35333353).
The spelling of 12212132 in words is "twelve million, two hundred twelve thousand, one hundred thirty-two".