121109228 has 6 divisors (see below), whose sum is σ = 211941156. Its totient is φ = 60554612.

The previous prime is 121109227. The next prime is 121109239. The reversal of 121109228 is 822901121.

It is a junction number, because it is equal to n+sod(n) for n = 121109197 and 121109206.

It is not an unprimeable number, because it can be changed into a prime (121109227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15138650 + ... + 15138657.

It is an arithmetic number, because the mean of its divisors is an integer number (35323526).

Almost surely, 2^121109228 is an apocalyptic number.

It is an amenable number.

121109228 is a deficient number, since it is larger than the sum of its proper divisors (90831928).

121109228 is a wasteful number, since it uses less digits than its factorization.

121109228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30277311 (or 30277309 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 121109228 is about 11004.9637891272. The cubic root of 121109228 is about 494.7575291065.

The spelling of 121109228 in words is "one hundred twenty-one million, one hundred nine thousand, two hundred twenty-eight".