12109152 has 48 divisors (see below), whose sum is σ = 34679232. Its totient is φ = 3669120.

The previous prime is 12109147. The next prime is 12109157. The reversal of 12109152 is 25190121.

It is an interprime number because it is at equal distance from previous prime (12109147) and next prime (12109157).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12109157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4678 + ... + 6789.

It is an arithmetic number, because the mean of its divisors is an integer number (722484).

Almost surely, 2^12109152 is an apocalyptic number.

12109152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12109152 is an abundant number, since it is smaller than the sum of its proper divisors (22570080).

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

12109152 is a wasteful number, since it uses less digits than its factorization.

12109152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11491 (or 11483 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 12109152 is about 3479.8206850354. The cubic root of 12109152 is about 229.6349091218.

Adding to 12109152 its reverse (25190121), we get a palindrome (37299273).

The spelling of 12109152 in words is "twelve million, one hundred nine thousand, one hundred fifty-two".