2221110211211 has 4 divisors (see below), whose sum is σ = 2221138515624. Its totient is φ = 2221081906800.

The previous prime is 2221110211183. The next prime is 2221110211213. The reversal of 2221110211211 is 1121120111222.

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 2221110211211 - 2¹⁸ = 2221109949067 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 2221110211211.

It is not an unprimeable number, because it can be changed into a prime (2221110211213) 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 3 ways as a sum of consecutive naturals, for example, 14034170 + ... + 14191551.

It is an arithmetic number, because the mean of its divisors is an integer number (555284628906).

Almost surely, 2^{2221110211211} is an apocalyptic number.

2221110211211 is a deficient number, since it is larger than the sum of its proper divisors (28304413).

2221110211211 is an equidigital number, since it uses as much as digits as its factorization.

2221110211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28304412.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2221110211211 its reverse (1121120111222), we get a palindrome (3342230322433).

The spelling of 2221110211211 in words is "two trillion, two hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, two hundred eleven".