205222122 has 24 divisors (see below), whose sum is σ = 508169376. Its totient is φ = 58634856.

The previous prime is 205222099. The next prime is 205222141. The reversal of 205222122 is 221222502.

205222122 is a `hidden beast` number, since 20 + 522 + 2 + 122 = 666.

It is a super-2 number, since 2×205222122² = 84232238716365768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 205222095 and 205222104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814248 + ... + 814499.

It is an arithmetic number, because the mean of its divisors is an integer number (21173724).

Almost surely, 2^205222122 is an apocalyptic number.

205222122 is an abundant number, since it is smaller than the sum of its proper divisors (302947254).

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

205222122 is a wasteful number, since it uses less digits than its factorization.

205222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628762 (or 1628759 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205222122 is about 14325.5757999461. The cubic root of 205222122 is about 589.8497386187.

Adding to 205222122 its reverse (221222502), we get a palindrome (426444624).

The spelling of 205222122 in words is "two hundred five million, two hundred twenty-two thousand, one hundred twenty-two".