12285091 has 16 divisors (see below), whose sum is σ = 15253504. Its totient is φ = 9634464.

The previous prime is 12285061. The next prime is 12285103. The reversal of 12285091 is 19058221.

12285091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12285091 - 2¹⁵ = 12252323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12285011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11026 + ... + 12088.

It is an arithmetic number, because the mean of its divisors is an integer number (953344).

Almost surely, 2^12285091 is an apocalyptic number.

12285091 is a deficient number, since it is larger than the sum of its proper divisors (2968413).

12285091 is a wasteful number, since it uses less digits than its factorization.

12285091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 12285091 is about 3505.0094151086. The cubic root of 12285091 is about 230.7417201593.

The spelling of 12285091 in words is "twelve million, two hundred eighty-five thousand, ninety-one".