205213050642103 has 16 divisors (see below), whose sum is σ = 242719349532480. Its totient is φ = 169759435700736.

The previous prime is 205213050642097. The next prime is 205213050642133. The reversal of 205213050642103 is 301246050312502.

It is not a de Polignac number, because 205213050642103 - 2¹⁷ = 205213050511031 is a prime.

It is a super-2 number, since 2×205213050642103² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205213050642133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213968226 + ... + 214925167.

It is an arithmetic number, because the mean of its divisors is an integer number (15169959345780).

Almost surely, 2^{205213050642103} is an apocalyptic number.

205213050642103 is a deficient number, since it is larger than the sum of its proper divisors (37506298890377).

205213050642103 is a wasteful number, since it uses less digits than its factorization.

205213050642103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428895786.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 205213050642103 in words is "two hundred five trillion, two hundred thirteen billion, fifty million, six hundred forty-two thousand, one hundred three".