252121405232 has 80 divisors (see below), whose sum is σ = 522195595200. Its totient is φ = 117508571136.

The previous prime is 252121405219. The next prime is 252121405241. The reversal of 252121405232 is 232504121252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 252121405195 and 252121405204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14297573 + ... + 14315195.

It is an arithmetic number, because the mean of its divisors is an integer number (6527444940).

Almost surely, 2^252121405232 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 252121405232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261097797600).

252121405232 is an abundant number, since it is smaller than the sum of its proper divisors (270074189968).

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

252121405232 is a wasteful number, since it uses less digits than its factorization.

252121405232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18150 (or 18144 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 252121405232 its reverse (232504121252), we get a palindrome (484625526484).

The spelling of 252121405232 in words is "two hundred fifty-two billion, one hundred twenty-one million, four hundred five thousand, two hundred thirty-two".