121121252 has 12 divisors (see below), whose sum is σ = 242242560. Its totient is φ = 51909096.

The previous prime is 121121251. The next prime is 121121269. The reversal of 121121252 is 252121121.

121121252 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 121121252.

It is not an unprimeable number, because it can be changed into a prime (121121251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2162852 + ... + 2162907.

It is an arithmetic number, because the mean of its divisors is an integer number (20186880).

Almost surely, 2^121121252 is an apocalyptic number.

It is an amenable number.

121121252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121121252 is a wasteful number, since it uses less digits than its factorization.

121121252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325770 (or 4325768 counting only the distinct ones).

The product of its digits is 80, while the sum is 17.

The square root of 121121252 is about 11005.5100745036. The cubic root of 121121252 is about 494.7739021161.

Adding to 121121252 its reverse (252121121), we get a palindrome (373242373).

The spelling of 121121252 in words is "one hundred twenty-one million, one hundred twenty-one thousand, two hundred fifty-two".