205055245121103 has 120 divisors (see below), whose sum is σ = 336010126193280. Its totient is φ = 124548164395200.

The previous prime is 205055245121101. The next prime is 205055245121179. The reversal of 205055245121103 is 301121542550502.

205055245121103 is a `hidden beast` number, since 2 + 0 + 5 + 0 + 5 + 5 + 24 + 512 + 110 + 3 = 666.

It is not a de Polignac number, because 205055245121103 - 2¹ = 205055245121101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205055245121101) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1194046678 + ... + 1194218396.

It is an arithmetic number, because the mean of its divisors is an integer number (2800084384944).

Almost surely, 2^{205055245121103} is an apocalyptic number.

205055245121103 is a deficient number, since it is larger than the sum of its proper divisors (130954881072177).

205055245121103 is a wasteful number, since it uses less digits than its factorization.

205055245121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172891 (or 172869 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 205055245121103 its reverse (301121542550502), we get a palindrome (506176787671605).

The spelling of 205055245121103 in words is "two hundred five trillion, fifty-five billion, two hundred forty-five million, one hundred twenty-one thousand, one hundred three".