205241212103 has 12 divisors (see below), whose sum is σ = 214812615528. Its totient is φ = 196079877840.

The previous prime is 205241212097. The next prime is 205241212117. The reversal of 205241212103 is 301212142502.

It is not a de Polignac number, because 205241212103 - 2²⁴ = 205224434887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205241212303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202913 + ... + 672053.

It is an arithmetic number, because the mean of its divisors is an integer number (17901051294).

Almost surely, 2^205241212103 is an apocalyptic number.

205241212103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

205241212103 is a deficient number, since it is larger than the sum of its proper divisors (9571403425).

205241212103 is an equidigital number, since it uses as much as digits as its factorization.

205241212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470014 (or 469991 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 205241212103 its reverse (301212142502), we get a palindrome (506453354605).

The spelling of 205241212103 in words is "two hundred five billion, two hundred forty-one million, two hundred twelve thousand, one hundred three".