12090121 has 8 divisors (see below), whose sum is σ = 12485088. Its totient is φ = 11700000.

The previous prime is 12090119. The next prime is 12090131. The reversal of 12090121 is 12109021.

12090121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12090121 - 2¹ = 12090119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12090095 and 12090104.

It is not an unprimeable number, because it can be changed into a prime (12090101) 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, 4246 + ... + 6496.

It is an arithmetic number, because the mean of its divisors is an integer number (1560636).

Almost surely, 2^12090121 is an apocalyptic number.

It is an amenable number.

12090121 is a deficient number, since it is larger than the sum of its proper divisors (394967).

12090121 is a wasteful number, since it uses less digits than its factorization.

12090121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 12090121 is about 3477.0851298178. The cubic root of 12090121 is about 229.5145463477.

Adding to 12090121 its reverse (12109021), we get a palindrome (24199142).

The spelling of 12090121 in words is "twelve million, ninety thousand, one hundred twenty-one".