11011211020211 has 4 divisors (see below), whose sum is σ = 11028335765832. Its totient is φ = 10994086274592.

The previous prime is 11011211020207. The next prime is 11011211020213. The reversal of 11011211020211 is 11202011211011.

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 11011211020211 - 2² = 11011211020207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011211020213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8562371846 + ... + 8562373131.

It is an arithmetic number, because the mean of its divisors is an integer number (2757083941458).

Almost surely, 2^{11011211020211} is an apocalyptic number.

11011211020211 is a deficient number, since it is larger than the sum of its proper divisors (17124745621).

11011211020211 is an equidigital number, since it uses as much as digits as its factorization.

11011211020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124745620.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11011211020211 its reverse (11202011211011), we get a palindrome (22213222231222).

The spelling of 11011211020211 in words is "eleven trillion, eleven billion, two hundred eleven million, twenty thousand, two hundred eleven".