121228 has 6 divisors (see below), whose sum is σ = 212156. Its totient is φ = 60612.

The previous prime is 121189. The next prime is 121229. The reversal of 121228 is 822121.

It is not an unprimeable number, because it can be changed into a prime (121229) by changing a digit.

121228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15150 + ... + 15157.

2¹²¹²²⁸ is an apocalyptic number.

It is an amenable number.

121228 is a deficient number, since it is larger than the sum of its proper divisors (90928).

121228 is a wasteful number, since it uses less digits than its factorization.

121228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30311 (or 30309 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 121228 is about 348.1781153375. The cubic root of 121228 is about 49.4919212745.

Adding to 121228 its reverse (822121), we get a palindrome (943349).

The spelling of 121228 in words is "one hundred twenty-one thousand, two hundred twenty-eight".