205103223320 has 32 divisors (see below), whose sum is σ = 473954749200. Its totient is φ = 79823956608.

The previous prime is 205103223319. The next prime is 205103223323. The reversal of 205103223320 is 23322301502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205103223323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69290150 + ... + 69293109.

Almost surely, 2^205103223320 is an apocalyptic number.

205103223320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205103223320 is an abundant number, since it is smaller than the sum of its proper divisors (268851525880).

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

205103223320 is a wasteful number, since it uses less digits than its factorization.

205103223320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138583307 (or 138583303 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 205103223320 its reverse (23322301502), we get a palindrome (228425524822).

The spelling of 205103223320 in words is "two hundred five billion, one hundred three million, two hundred twenty-three thousand, three hundred twenty".