201211022105 has 32 divisors (see below), whose sum is σ = 261374722560. Its totient is φ = 148197703680.

The previous prime is 201211022099. The next prime is 201211022137. The reversal of 201211022105 is 501220112102.

201211022105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-201211022105 is a prime.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 900512 + ... + 1101518.

It is an arithmetic number, because the mean of its divisors is an integer number (8167960080).

Almost surely, 2^201211022105 is an apocalyptic number.

It is an amenable number.

201211022105 is a deficient number, since it is larger than the sum of its proper divisors (60163700455).

201211022105 is a wasteful number, since it uses less digits than its factorization.

201211022105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201329.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 201211022105 its reverse (501220112102), we get a palindrome (702431134207).

The spelling of 201211022105 in words is "two hundred one billion, two hundred eleven million, twenty-two thousand, one hundred five".