12012231 has 32 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 6180480.

The previous prime is 12012197. The next prime is 12012257. The reversal of 12012231 is 13221021.

It is not a de Polignac number, because 12012231 - 2⁶ = 12012167 is a prime.

It is a super-2 number, since 2×12012231² = 288587387194722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34245 + ... + 34593.

It is an arithmetic number, because the mean of its divisors is an integer number (630000).

Almost surely, 2^12012231 is an apocalyptic number.

12012231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012231 is a deficient number, since it is larger than the sum of its proper divisors (8147769).

12012231 is a wasteful number, since it uses less digits than its factorization.

12012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12012231 is about 3465.8665583083. The cubic root of 12012231 is about 229.0206054315.

Adding to 12012231 its reverse (13221021), we get a palindrome (25233252).

It can be divided in two parts, 12012 and 231, that multiplied together give a palindrome (2774772).

The spelling of 12012231 in words is "twelve million, twelve thousand, two hundred thirty-one".