12013228 has 6 divisors (see below), whose sum is σ = 21023156. Its totient is φ = 6006612.

The previous prime is 12013223. The next prime is 12013229. The reversal of 12013228 is 82231021.

It is not an unprimeable number, because it can be changed into a prime (12013223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501650 + ... + 1501657.

Almost surely, 2^12013228 is an apocalyptic number.

It is an amenable number.

12013228 is a deficient number, since it is larger than the sum of its proper divisors (9009928).

12013228 is a wasteful number, since it uses less digits than its factorization.

12013228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003311 (or 3003309 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12013228 is about 3466.0103865972. The cubic root of 12013228 is about 229.0269413965.

Adding to 12013228 its reverse (82231021), we get a palindrome (94244249).

The spelling of 12013228 in words is "twelve million, thirteen thousand, two hundred twenty-eight".