252222122 has 8 divisors (see below), whose sum is σ = 378528996. Its totient is φ = 126045792.

The previous prime is 252222079. The next prime is 252222151. The reversal of 252222122 is 221222252.

It can be written as a sum of positive squares in 2 ways, for example, as 241522681 + 10699441 = 15541^2 + 3271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 252222094 and 252222103.

It is an unprimeable number.

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, 27653 + ... + 35624.

Almost surely, 2^252222122 is an apocalyptic number.

252222122 is a deficient number, since it is larger than the sum of its proper divisors (126306874).

252222122 is a wasteful number, since it uses less digits than its factorization.

252222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65272.

The product of its digits is 640, while the sum is 20.

The square root of 252222122 is about 15881.5025107828. The cubic root of 252222122 is about 631.8214875975.

Adding to 252222122 its reverse (221222252), we get a palindrome (473444374).

The spelling of 252222122 in words is "two hundred fifty-two million, two hundred twenty-two thousand, one hundred twenty-two".