205332221113 has 4 divisors (see below), whose sum is σ = 205335976228. Its totient is φ = 205328466000.

The previous prime is 205332221111. The next prime is 205332221117. The reversal of 205332221113 is 311122233502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115108882729 + 90223338384 = 339277^2 + 300372^2 .

It is a cyclic number.

It is not a de Polignac number, because 205332221113 - 2¹ = 205332221111 is a prime.

It is a super-2 number, since 2×205332221113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205332221111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1794306 + ... + 1905307.

It is an arithmetic number, because the mean of its divisors is an integer number (51333994057).

Almost surely, 2^205332221113 is an apocalyptic number.

It is an amenable number.

205332221113 is a deficient number, since it is larger than the sum of its proper divisors (3755115).

205332221113 is an equidigital number, since it uses as much as digits as its factorization.

205332221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755114.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 205332221113 its reverse (311122233502), we get a palindrome (516454454615).

The spelling of 205332221113 in words is "two hundred five billion, three hundred thirty-two million, two hundred twenty-one thousand, one hundred thirteen".