123221252 has 24 divisors (see below), whose sum is σ = 268847040. Its totient is φ = 48008160.

The previous prime is 123221221. The next prime is 123221291. The reversal of 123221252 is 252122321.

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 7 ways as a sum of consecutive naturals, for example, 199727 + ... + 200342.

It is an arithmetic number, because the mean of its divisors is an integer number (11201960).

Almost surely, 2^123221252 is an apocalyptic number.

It is an amenable number.

123221252 is an abundant number, since it is smaller than the sum of its proper divisors (145625788).

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

123221252 is a wasteful number, since it uses less digits than its factorization.

123221252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400091 (or 400089 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 123221252 is about 11100.5068352756. The cubic root of 123221252 is about 497.6169966331.

Adding to 123221252 its reverse (252122321), we get a palindrome (375343573).

The spelling of 123221252 in words is "one hundred twenty-three million, two hundred twenty-one thousand, two hundred fifty-two".