12170223 has 16 divisors (see below), whose sum is σ = 19417440. Its totient is φ = 7489152.

The previous prime is 12170219. The next prime is 12170233. The reversal of 12170223 is 32207121.

It is not a de Polignac number, because 12170223 - 2² = 12170219 is a prime.

It is a super-2 number, since 2×12170223² = 296228655739458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12170196 and 12170205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12170233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16986 + ... + 17687.

It is an arithmetic number, because the mean of its divisors is an integer number (1213590).

Almost surely, 2^12170223 is an apocalyptic number.

12170223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12170223 is a deficient number, since it is larger than the sum of its proper divisors (7247217).

12170223 is a wasteful number, since it uses less digits than its factorization.

12170223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34695 (or 34689 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12170223 is about 3488.5846700345. The cubic root of 12170223 is about 230.0203069657.

Adding to 12170223 its reverse (32207121), we get a palindrome (44377344).

The spelling of 12170223 in words is "twelve million, one hundred seventy thousand, two hundred twenty-three".