201211101211 has 4 divisors (see below), whose sum is σ = 203164607152. Its totient is φ = 199257595272.

The previous prime is 201211101197. The next prime is 201211101229. The reversal of 201211101211 is 112101112102.

It is a happy number.

201211101211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201211101211 - 2⁷ = 201211101083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201211101191 and 201211101200.

It is not an unprimeable number, because it can be changed into a prime (201211101251) 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 in 3 ways as a sum of consecutive naturals, for example, 976752816 + ... + 976753021.

It is an arithmetic number, because the mean of its divisors is an integer number (50791151788).

Almost surely, 2^201211101211 is an apocalyptic number.

201211101211 is a deficient number, since it is larger than the sum of its proper divisors (1953505941).

201211101211 is a wasteful number, since it uses less digits than its factorization.

201211101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953505940.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201211101211 its reverse (112101112102), we get a palindrome (313312213313).

The spelling of 201211101211 in words is "two hundred one billion, two hundred eleven million, one hundred one thousand, two hundred eleven".