201012222005 has 12 divisors (see below), whose sum is σ = 280596653100. Its totient is φ = 137836952064.

The previous prime is 201012221987. The next prime is 201012222007. The reversal of 201012222005 is 500222210102.

It can be written as a sum of positive squares in 2 ways, for example, as 31418980516 + 169593241489 = 177254^2 + 411817^2 .

It is not a de Polignac number, because 201012222005 - 2¹² = 201012217909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012222007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 410228780 + ... + 410229269.

It is an arithmetic number, because the mean of its divisors is an integer number (23383054425).

Almost surely, 2^201012222005 is an apocalyptic number.

It is an amenable number.

201012222005 is a deficient number, since it is larger than the sum of its proper divisors (79584431095).

201012222005 is an equidigital number, since it uses as much as digits as its factorization.

201012222005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820458068 (or 820458061 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 201012222005 its reverse (500222210102), we get a palindrome (701234432107).

The spelling of 201012222005 in words is "two hundred one billion, twelve million, two hundred twenty-two thousand, five".