215222152 has 16 divisors (see below), whose sum is σ = 410157900. Its totient is φ = 105846720.

The previous prime is 215222123. The next prime is 215222167. The reversal of 215222152 is 251222512.

It can be written as a sum of positive squares in 2 ways, for example, as 200675556 + 14546596 = 14166^2 + 3814^2 .

It is a super-2 number, since 2×215222152² = 92641149423022208, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 220027 + ... + 221002.

Almost surely, 2^215222152 is an apocalyptic number.

It is an amenable number.

215222152 is a deficient number, since it is larger than the sum of its proper divisors (194935748).

215222152 is a wasteful number, since it uses less digits than its factorization.

215222152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441096 (or 441092 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 215222152 is about 14670.4516631220. The cubic root of 215222152 is about 599.2789040854.

Adding to 215222152 its reverse (251222512), we get a palindrome (466444664).

The spelling of 215222152 in words is "two hundred fifteen million, two hundred twenty-two thousand, one hundred fifty-two".