205241212102 has 16 divisors (see below), whose sum is σ = 331969100400. Its totient is φ = 94848312960.

The previous prime is 205241212097. The next prime is 205241212117. The reversal of 205241212102 is 201212142502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65865327 + ... + 65868442.

It is an arithmetic number, because the mean of its divisors is an integer number (20748068775).

Almost surely, 2^205241212102 is an apocalyptic number.

205241212102 is a deficient number, since it is larger than the sum of its proper divisors (126727888298).

205241212102 is a wasteful number, since it uses less digits than its factorization.

205241212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131733831.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 205241212102 its reverse (201212142502), we get a palindrome (406453354604).

The spelling of 205241212102 in words is "two hundred five billion, two hundred forty-one million, two hundred twelve thousand, one hundred two".