252155121200 has 30 divisors (see below), whose sum is σ = 605802679644. Its totient is φ = 100862048320.

The previous prime is 252155121199. The next prime is 252155121221. The reversal of 252155121200 is 2121551252.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 252155121200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 315193502 + ... + 315194301.

Almost surely, 2^252155121200 is an apocalyptic number.

252155121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252155121200 is an abundant number, since it is smaller than the sum of its proper divisors (353647558444).

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

252155121200 is a wasteful number, since it uses less digits than its factorization.

252155121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630387821 (or 630387810 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 252155121200 its reverse (2121551252), we get a palindrome (254276672452).

It can be divided in two parts, 25215 and 5121200, that added together give a palindrome (5146415).

The spelling of 252155121200 in words is "two hundred fifty-two billion, one hundred fifty-five million, one hundred twenty-one thousand, two hundred".