206054224221 has 8 divisors (see below), whose sum is σ = 275878962304. Its totient is φ = 136799484480.

The previous prime is 206054224193. The next prime is 206054224253. The reversal of 206054224221 is 122422450602.

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

It is not a de Polignac number, because 206054224221 - 2¹¹ = 206054222173 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 (206054224421) 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, 142498741 + ... + 142500186.

It is an arithmetic number, because the mean of its divisors is an integer number (34484870288).

Almost surely, 2^206054224221 is an apocalyptic number.

It is an amenable number.

206054224221 is a deficient number, since it is larger than the sum of its proper divisors (69824738083).

206054224221 is a wasteful number, since it uses less digits than its factorization.

206054224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284999171.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 206054224221 its reverse (122422450602), we get a palindrome (328476674823).

The spelling of 206054224221 in words is "two hundred six billion, fifty-four million, two hundred twenty-four thousand, two hundred twenty-one".