11021112211211 has 4 divisors (see below), whose sum is σ = 11160619960800. Its totient is φ = 10881604461624.

The previous prime is 11021112211171. The next prime is 11021112211229. The reversal of 11021112211211 is 11211221112011.

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 11021112211211 - 2¹⁰ = 11021112210187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11021112211211.

It is not an unprimeable number, because it can be changed into a prime (11021112211231) 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, 69753874676 + ... + 69753874833.

It is an arithmetic number, because the mean of its divisors is an integer number (2790154990200).

Almost surely, 2^{11021112211211} is an apocalyptic number.

11021112211211 is a deficient number, since it is larger than the sum of its proper divisors (139507749589).

11021112211211 is an equidigital number, since it uses as much as digits as its factorization.

11021112211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139507749588.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11021112211211 its reverse (11211221112011), we get a palindrome (22232333323222).

The spelling of 11021112211211 in words is "eleven trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, two hundred eleven".