12065220 has 48 divisors (see below), whose sum is σ = 37537920. Its totient is φ = 3217248.

The previous prime is 12065203. The next prime is 12065237. The reversal of 12065220 is 2256021.

12065220 is a `hidden beast` number, since 12 + 0 + 652 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (12065203) and next prime (12065237).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12065193 and 12065202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10632 + ... + 11711.

It is an arithmetic number, because the mean of its divisors is an integer number (782040).

Almost surely, 2^12065220 is an apocalyptic number.

12065220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12065220 is an abundant number, since it is smaller than the sum of its proper divisors (25472700).

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

12065220 is a wasteful number, since it uses less digits than its factorization.

12065220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22361 (or 22353 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12065220 is about 3473.5025550588. The cubic root of 12065220 is about 229.3568674770.

The spelling of 12065220 in words is "twelve million, sixty-five thousand, two hundred twenty".