22111210211 has 4 divisors (see below), whose sum is σ = 22114298232. Its totient is φ = 22108122192.

The previous prime is 22111210171. The next prime is 22111210273. The reversal of 22111210211 is 11201211122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11201211122 = 2 ⋅5600605561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111210211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22114210211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533245 + ... + 1547598.

It is an arithmetic number, because the mean of its divisors is an integer number (5528574558).

Almost surely, 2^22111210211 is an apocalyptic number.

22111210211 is a deficient number, since it is larger than the sum of its proper divisors (3088021).

22111210211 is an equidigital number, since it uses as much as digits as its factorization.

22111210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088020.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111210211 its reverse (11201211122), we get a palindrome (33312421333).

The spelling of 22111210211 in words is "twenty-two billion, one hundred eleven million, two hundred ten thousand, two hundred eleven".