12107121 has 8 divisors (see below), whose sum is σ = 17384640. Its totient is φ = 7450512.

The previous prime is 12107119. The next prime is 12107129. The reversal of 12107121 is 12170121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12107121 - 2¹ = 12107119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12107121.

It is not an unprimeable number, because it can be changed into a prime (12107129) 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, 155181 + ... + 155258.

It is an arithmetic number, because the mean of its divisors is an integer number (2173080).

Almost surely, 2^12107121 is an apocalyptic number.

It is an amenable number.

12107121 is a deficient number, since it is larger than the sum of its proper divisors (5277519).

12107121 is a wasteful number, since it uses less digits than its factorization.

12107121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310455.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 12107121 is about 3479.5288474160. The cubic root of 12107121 is about 229.6220699465.

Adding to 12107121 its reverse (12170121), we get a palindrome (24277242).

The spelling of 12107121 in words is "twelve million, one hundred seven thousand, one hundred twenty-one".