12126660 has 96 divisors (see below), whose sum is σ = 41809152. Its totient is φ = 2557440.

The previous prime is 12126643. The next prime is 12126671. The reversal of 12126660 is 6662121.

It is a self number, because there is not a number n which added to its sum of digits gives 12126660.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4350 + ... + 6570.

It is an arithmetic number, because the mean of its divisors is an integer number (435512).

Almost surely, 2^12126660 is an apocalyptic number.

12126660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12126660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20904576).

12126660 is an abundant number, since it is smaller than the sum of its proper divisors (29682492).

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

12126660 is a wasteful number, since it uses less digits than its factorization.

12126660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 2251 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12126660 is about 3482.3354232469. The cubic root of 12126660 is about 229.7455282604.

Adding to 12126660 its reverse (6662121), we get a palindrome (18788781).

The spelling of 12126660 in words is "twelve million, one hundred twenty-six thousand, six hundred sixty".