12120085 has 4 divisors (see below), whose sum is σ = 14544108. Its totient is φ = 9696064.

The previous prime is 12120083. The next prime is 12120089. The reversal of 12120085 is 58002121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3305124 + 8814961 = 1818^2 + 2969^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120085 - 2¹ = 12120083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120083) by changing a digit.

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, 1212004 + ... + 1212013.

It is an arithmetic number, because the mean of its divisors is an integer number (3636027).

Almost surely, 2^12120085 is an apocalyptic number.

It is an amenable number.

12120085 is a deficient number, since it is larger than the sum of its proper divisors (2424023).

12120085 is an equidigital number, since it uses as much as digits as its factorization.

12120085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424022.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 12120085 is about 3481.3912448905. The cubic root of 12120085 is about 229.7039985526.

The spelling of 12120085 in words is "twelve million, one hundred twenty thousand, eighty-five".