12012255 has 24 divisors (see below), whose sum is σ = 20955168. Its totient is φ = 6365376.

The previous prime is 12012197. The next prime is 12012257. The reversal of 12012255 is 55221021.

It is not a de Polignac number, because 12012255 - 2¹⁹ = 11487967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012257) 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, 7014 + ... + 8556.

It is an arithmetic number, because the mean of its divisors is an integer number (873132).

Almost surely, 2^12012255 is an apocalyptic number.

12012255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12012255 is a deficient number, since it is larger than the sum of its proper divisors (8942913).

12012255 is a wasteful number, since it uses less digits than its factorization.

12012255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12012255 is about 3465.8700206442. The cubic root of 12012255 is about 229.0207579564.

Adding to 12012255 its reverse (55221021), we get a palindrome (67233276).

The spelling of 12012255 in words is "twelve million, twelve thousand, two hundred fifty-five".