11211211211 has 8 divisors (see below), whose sum is σ = 11616352560. Its totient is φ = 10813240672.

The previous prime is 11211211199. The next prime is 11211211213.

11211211211 is nontrivially palindromic in base 10.

11211211211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11211211211 - 2⁶ = 11211211147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211211213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789520 + ... + 1795773.

It is an arithmetic number, because the mean of its divisors is an integer number (1452044070).

Almost surely, 2^11211211211 is an apocalyptic number.

11211211211 is a deficient number, since it is larger than the sum of its proper divisors (405141349).

11211211211 is an equidigital number, since it uses as much as digits as its factorization.

11211211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585405.

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

The spelling of 11211211211 in words is "eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred eleven".