12100656 has 40 divisors (see below), whose sum is σ = 32341680. Its totient is φ = 3894016.

The previous prime is 12100643. The next prime is 12100657. The reversal of 12100656 is 65600121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12100657) 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, 2955 + ... + 5738.

It is an arithmetic number, because the mean of its divisors is an integer number (808542).

Almost surely, 2^12100656 is an apocalyptic number.

12100656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12100656 is an abundant number, since it is smaller than the sum of its proper divisors (20241024).

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

12100656 is a wasteful number, since it uses less digits than its factorization.

12100656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733 (or 8727 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 12100656 is about 3478.5997182775. The cubic root of 12100656 is about 229.5811912219.

Adding to 12100656 its reverse (65600121), we get a palindrome (77700777).

The spelling of 12100656 in words is "twelve million, one hundred thousand, six hundred fifty-six".