121258228 has 96 divisors (see below), whose sum is σ = 279417600. Its totient is φ = 44706816.

The previous prime is 121258219. The next prime is 121258253. The reversal of 121258228 is 822852121.

It is a self number, because there is not a number n which added to its sum of digits gives 121258228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615426 + ... + 615622.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^121258228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121258228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139708800).

121258228 is an abundant number, since it is smaller than the sum of its proper divisors (158159372).

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

121258228 is a wasteful number, since it uses less digits than its factorization.

121258228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 327 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 121258228 is about 11011.7313806685. The cubic root of 121258228 is about 494.9603450871.

The spelling of 121258228 in words is "one hundred twenty-one million, two hundred fifty-eight thousand, two hundred twenty-eight".