12170020 has 24 divisors (see below), whose sum is σ = 25631424. Its totient is φ = 4853856.

The previous prime is 12170017. The next prime is 12170021. The reversal of 12170020 is 2007121.

12170020 is nontrivially palindromic in base 12.

12170020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12170021) 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, 8689 + ... + 9991.

It is an arithmetic number, because the mean of its divisors is an integer number (1067976).

Almost surely, 2^12170020 is an apocalyptic number.

12170020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12170020 is an abundant number, since it is smaller than the sum of its proper divisors (13461404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12170020 is a wasteful number, since it uses less digits than its factorization.

12170020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 12170020 is about 3488.5555750196. Note that the first 4 decimals coincide. The cubic root of 12170020 is about 230.0190280414.

Adding to 12170020 its reverse (2007121), we get a palindrome (14177141).

The spelling of 12170020 in words is "twelve million, one hundred seventy thousand, twenty".