205222061 has 4 divisors (see below), whose sum is σ = 223878624. Its totient is φ = 186565500.

The previous prime is 205222049. The next prime is 205222063. The reversal of 205222061 is 160222502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 205222061 - 2⁶ = 205221997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205222063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9328265 + ... + 9328286.

It is an arithmetic number, because the mean of its divisors is an integer number (55969656).

Almost surely, 2^205222061 is an apocalyptic number.

It is an amenable number.

205222061 is a deficient number, since it is larger than the sum of its proper divisors (18656563).

205222061 is a wasteful number, since it uses less digits than its factorization.

205222061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18656562.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 205222061 is about 14325.5736708866. The cubic root of 205222061 is about 589.8496801766.

Adding to 205222061 its reverse (160222502), we get a palindrome (365444563).

The spelling of 205222061 in words is "two hundred five million, two hundred twenty-two thousand, sixty-one".