205222130 has 32 divisors (see below), whose sum is σ = 392843520. Its totient is φ = 76921600.

The previous prime is 205222099. The next prime is 205222141. The reversal of 205222130 is 31222502.

It is a super-2 number, since 2×205222130² = 84232245283473800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 205222099 and 205222108.

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, 38105 + ... + 43155.

It is an arithmetic number, because the mean of its divisors is an integer number (12276360).

Almost surely, 2^205222130 is an apocalyptic number.

205222130 is a deficient number, since it is larger than the sum of its proper divisors (187621390).

205222130 is a wasteful number, since it uses less digits than its factorization.

205222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5314.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 205222130 is about 14325.5760791669. The cubic root of 205222130 is about 589.8497462832.

Adding to 205222130 its reverse (31222502), we get a palindrome (236444632).

The spelling of 205222130 in words is "two hundred five million, two hundred twenty-two thousand, one hundred thirty".