12022785 has 36 divisors (see below), whose sum is σ = 21535956. Its totient is φ = 6202560.

The previous prime is 12022783. The next prime is 12022789. The reversal of 12022785 is 58722021.

It can be written as a sum of positive squares in 2 ways, for example, as 6533136 + 5489649 = 2556^2 + 2343^2 .

It is not a de Polignac number, because 12022785 - 2¹ = 12022783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022783) 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 35 ways as a sum of consecutive naturals, for example, 169300 + ... + 169370.

It is an arithmetic number, because the mean of its divisors is an integer number (598221).

Almost surely, 2^12022785 is an apocalyptic number.

12022785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12022785 is a deficient number, since it is larger than the sum of its proper divisors (9513171).

12022785 is an equidigital number, since it uses as much as digits as its factorization.

12022785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12022785 is about 3467.3887869692. The cubic root of 12022785 is about 229.0876586411.

The spelling of 12022785 in words is "twelve million, twenty-two thousand, seven hundred eighty-five".