205121314102 has 8 divisors (see below), whose sum is σ = 307815116112. Its totient is φ = 102516275400.

The previous prime is 205121314093. The next prime is 205121314129. The reversal of 205121314102 is 201413121502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22185049 + ... + 22194292.

It is an arithmetic number, because the mean of its divisors is an integer number (38476889514).

Almost surely, 2^205121314102 is an apocalyptic number.

205121314102 is a deficient number, since it is larger than the sum of its proper divisors (102693802010).

205121314102 is a wasteful number, since it uses less digits than its factorization.

205121314102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44381654.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 205121314102 its reverse (201413121502), we get a palindrome (406534435604).

The spelling of 205121314102 in words is "two hundred five billion, one hundred twenty-one million, three hundred fourteen thousand, one hundred two".