205512330120101 has 8 divisors (see below), whose sum is σ = 205808487044160. Its totient is φ = 205216210207008.

The previous prime is 205512330120077. The next prime is 205512330120121. The reversal of 205512330120101 is 101021033215502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205512330120101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205512330120121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1870370 + ... + 20359836.

It is an arithmetic number, because the mean of its divisors is an integer number (25726060880520).

Almost surely, 2^{205512330120101} is an apocalyptic number.

It is an amenable number.

205512330120101 is a deficient number, since it is larger than the sum of its proper divisors (296156924059).

205512330120101 is a wasteful number, since it uses less digits than its factorization.

205512330120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18505483.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 205512330120101 its reverse (101021033215502), we get a palindrome (306533363335603).

The spelling of 205512330120101 in words is "two hundred five trillion, five hundred twelve billion, three hundred thirty million, one hundred twenty thousand, one hundred one".