12204231228 has 48 divisors (see below), whose sum is σ = 36160687360. Its totient is φ = 3486922992.

The previous prime is 12204231203. The next prime is 12204231239. The reversal of 12204231228 is 82213240221.

12204231228 is a `hidden beast` number, since 1 + 2 + 204 + 231 + 228 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 8070826 + ... + 8072337.

Almost surely, 2^12204231228 is an apocalyptic number.

12204231228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12204231228 is an abundant number, since it is smaller than the sum of its proper divisors (23956456132).

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

12204231228 is a wasteful number, since it uses less digits than its factorization.

12204231228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16143183 (or 16143175 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 12204231228 its reverse (82213240221), we get a palindrome (94417471449).

The spelling of 12204231228 in words is "twelve billion, two hundred four million, two hundred thirty-one thousand, two hundred twenty-eight".