252213222 has 16 divisors (see below), whose sum is σ = 516730032. Its totient is φ = 82020480.

The previous prime is 252213217. The next prime is 252213251. The reversal of 252213222 is 222312252.

It is a super-2 number, since 2×252213222² = 127223018703242568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512383 + ... + 512874.

It is an arithmetic number, because the mean of its divisors is an integer number (32295627).

Almost surely, 2^252213222 is an apocalyptic number.

252213222 is an abundant number, since it is smaller than the sum of its proper divisors (264516810).

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

252213222 is a wasteful number, since it uses less digits than its factorization.

252213222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025303.

The product of its digits is 960, while the sum is 21.

The square root of 252213222 is about 15881.2223081223. Note that the first 3 decimals coincide. The cubic root of 252213222 is about 631.8140559505.

Adding to 252213222 its reverse (222312252), we get a palindrome (474525474).

The spelling of 252213222 in words is "two hundred fifty-two million, two hundred thirteen thousand, two hundred twenty-two".