203213200105 has 4 divisors (see below), whose sum is σ = 243855840132. Its totient is φ = 162570560080.

The previous prime is 203213200061. The next prime is 203213200133. The reversal of 203213200105 is 501002312302.

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 72014942736 + 131198257369 = 268356^2 + 362213^2 .

It is not a de Polignac number, because 203213200105 - 2⁷ = 203213199977 is a prime.

It is a super-2 number, since 2×203213200105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20321320006 + ... + 20321320015.

It is an arithmetic number, because the mean of its divisors is an integer number (60963960033).

Almost surely, 2^203213200105 is an apocalyptic number.

It is an amenable number.

203213200105 is a deficient number, since it is larger than the sum of its proper divisors (40642640027).

203213200105 is an equidigital number, since it uses as much as digits as its factorization.

203213200105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40642640026.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 203213200105 its reverse (501002312302), we get a palindrome (704215512407).

The spelling of 203213200105 in words is "two hundred three billion, two hundred thirteen million, two hundred thousand, one hundred five".