121000224 has 24 divisors (see below), whose sum is σ = 317625840. Its totient is φ = 40333376.

The previous prime is 121000213. The next prime is 121000261. The reversal of 121000224 is 422000121.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630114 + ... + 630305.

It is an arithmetic number, because the mean of its divisors is an integer number (13234410).

Almost surely, 2^121000224 is an apocalyptic number.

It is an amenable number.

121000224 is an abundant number, since it is smaller than the sum of its proper divisors (196625616).

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

121000224 is a wasteful number, since it uses less digits than its factorization.

121000224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260432 (or 1260424 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 121000224 is about 11000.0101818135. The cubic root of 121000224 is about 494.6090495378.

Adding to 121000224 its reverse (422000121), we get a palindrome (543000345).

The spelling of 121000224 in words is "one hundred twenty-one million, two hundred twenty-four", and thus it is an aban number.