12168220 has 12 divisors (see below), whose sum is σ = 25553304. Its totient is φ = 4867280.

The previous prime is 12168187. The next prime is 12168223. The reversal of 12168220 is 2286121.

12168220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12168191 and 12168200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12168223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304186 + ... + 304225.

It is an arithmetic number, because the mean of its divisors is an integer number (2129442).

Almost surely, 2^12168220 is an apocalyptic number.

12168220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12168220 is an abundant number, since it is smaller than the sum of its proper divisors (13385084).

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

12168220 is a wasteful number, since it uses less digits than its factorization.

12168220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608420 (or 608418 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12168220 is about 3488.2975790491. The cubic root of 12168220 is about 230.0076872037.

The spelling of 12168220 in words is "twelve million, one hundred sixty-eight thousand, two hundred twenty".