121382228 has 24 divisors (see below), whose sum is σ = 232105440. Its totient is φ = 55084320.

The previous prime is 121382213. The next prime is 121382251. The reversal of 121382228 is 822283121.

It is a self number, because there is not a number n which added to its sum of digits gives 121382228.

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 7 ways as a sum of consecutive naturals, for example, 30650 + ... + 34382.

It is an arithmetic number, because the mean of its divisors is an integer number (9671060).

Almost surely, 2^121382228 is an apocalyptic number.

It is an amenable number.

121382228 is a deficient number, since it is larger than the sum of its proper divisors (110723212).

121382228 is a wasteful number, since it uses less digits than its factorization.

121382228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487 (or 4485 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 121382228 is about 11017.3603009069. The cubic root of 121382228 is about 495.1290049098.

The spelling of 121382228 in words is "one hundred twenty-one million, three hundred eighty-two thousand, two hundred twenty-eight".