205355103011 has 2 divisors, whose sum is σ = 205355103012. Its totient is φ = 205355103010.

The previous prime is 205355103001. The next prime is 205355103103. The reversal of 205355103011 is 110301553502.

It is a happy number.

205355103011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205355103011 - 2²⁶ = 205287994147 is a prime.

It is a super-2 number, since 2×205355103011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205355103001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102677551505 + 102677551506.

It is an arithmetic number, because the mean of its divisors is an integer number (102677551506).

Almost surely, 2^205355103011 is an apocalyptic number.

205355103011 is a deficient number, since it is larger than the sum of its proper divisors (1).

205355103011 is an equidigital number, since it uses as much as digits as its factorization.

205355103011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 205355103011 its reverse (110301553502), we get a palindrome (315656656513).

The spelling of 205355103011 in words is "two hundred five billion, three hundred fifty-five million, one hundred three thousand, eleven".