205055203524221 has 8 divisors (see below), whose sum is σ = 205101826868064. Its totient is φ = 205008584792400.

The previous prime is 205055203524191. The next prime is 205055203524233. The reversal of 205055203524221 is 122425302550502.

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

It is a cyclic number.

It is not a de Polignac number, because 205055203524221 - 2²² = 205055199329917 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 (205055203523221) 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, 88571231 + ... + 90856883.

It is an arithmetic number, because the mean of its divisors is an integer number (25637728358508).

Almost surely, 2^{205055203524221} is an apocalyptic number.

It is an amenable number.

205055203524221 is a deficient number, since it is larger than the sum of its proper divisors (46623343843).

205055203524221 is a wasteful number, since it uses less digits than its factorization.

205055203524221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306011.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 205055203524221 in words is "two hundred five trillion, fifty-five billion, two hundred three million, five hundred twenty-four thousand, two hundred twenty-one".