12101228 has 6 divisors (see below), whose sum is σ = 21177156. Its totient is φ = 6050612.

The previous prime is 12101227. The next prime is 12101237. The reversal of 12101228 is 82210121.

It is a happy number.

12101228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12101227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1512650 + ... + 1512657.

It is an arithmetic number, because the mean of its divisors is an integer number (3529526).

Almost surely, 2^12101228 is an apocalyptic number.

It is an amenable number.

12101228 is a deficient number, since it is larger than the sum of its proper divisors (9075928).

12101228 is a wasteful number, since it uses less digits than its factorization.

12101228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025311 (or 3025309 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12101228 is about 3478.6819342964. The cubic root of 12101228 is about 229.5848086118.

Adding to 12101228 its reverse (82210121), we get a palindrome (94311349).

The spelling of 12101228 in words is "twelve million, one hundred one thousand, two hundred twenty-eight".