12120066 has 48 divisors (see below), whose sum is σ = 30723264. Its totient is φ = 3380832.

The previous prime is 12120061. The next prime is 12120067. The reversal of 12120066 is 66002121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12120061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4300 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (640068).

Almost surely, 2^12120066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15361632).

12120066 is an abundant number, since it is smaller than the sum of its proper divisors (18603198).

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

12120066 is a wasteful number, since it uses less digits than its factorization.

12120066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12120066 is about 3481.3885160953. The cubic root of 12120066 is about 229.7038785211.

Adding to 12120066 its reverse (66002121), we get a palindrome (78122187).

The spelling of 12120066 in words is "twelve million, one hundred twenty thousand, sixty-six".