12012655 has 16 divisors (see below), whose sum is σ = 15667200. Its totient is φ = 8808480.

The previous prime is 12012643. The next prime is 12012677. The reversal of 12012655 is 55621021.

It is not a de Polignac number, because 12012655 - 2⁷ = 12012527 is a prime.

It is a congruent number.

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, 906 + ... + 4984.

It is an arithmetic number, because the mean of its divisors is an integer number (979200).

Almost surely, 2^12012655 is an apocalyptic number.

12012655 is a deficient number, since it is larger than the sum of its proper divisors (3654545).

12012655 is a wasteful number, since it uses less digits than its factorization.

12012655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 12012655 is about 3465.9277257323. The cubic root of 12012655 is about 229.0233000071.

Adding to 12012655 its reverse (55621021), we get a palindrome (67633676).

The spelling of 12012655 in words is "twelve million, twelve thousand, six hundred fifty-five".