11012211111211 has 4 divisors (see below), whose sum is σ = 11012281126000. Its totient is φ = 11012141096424.

The previous prime is 11012211111157. The next prime is 11012211111229. The reversal of 11012211111211 is 11211111221011.

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 11012211111211 - 2³⁵ = 10977851372843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012211111911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34770936 + ... + 35086213.

It is an arithmetic number, because the mean of its divisors is an integer number (2753070281500).

Almost surely, 2^{11012211111211} is an apocalyptic number.

11012211111211 is a deficient number, since it is larger than the sum of its proper divisors (70014789).

11012211111211 is an equidigital number, since it uses as much as digits as its factorization.

11012211111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70014788.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11012211111211 its reverse (11211111221011), we get a palindrome (22223322332222).

The spelling of 11012211111211 in words is "eleven trillion, twelve billion, two hundred eleven million, one hundred eleven thousand, two hundred eleven".