12109252 has 12 divisors (see below), whose sum is σ = 21228480. Its totient is φ = 6043976.

The previous prime is 12109241. The next prime is 12109267. The reversal of 12109252 is 25290121.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 249 + ... + 4927.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^12109252 is an apocalyptic number.

It is an amenable number.

12109252 is a deficient number, since it is larger than the sum of its proper divisors (9119228).

12109252 is a wasteful number, since it uses less digits than its factorization.

12109252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 12109252 is about 3479.8350535622. The cubic root of 12109252 is about 229.6355412450.

Adding to 12109252 its reverse (25290121), we get a palindrome (37399373).

The spelling of 12109252 in words is "twelve million, one hundred nine thousand, two hundred fifty-two".