22221020201111 has 4 divisors (see below), whose sum is σ = 22307483314992. Its totient is φ = 22134557087232.

The previous prime is 22221020201089. The next prime is 22221020201189. The reversal of 22221020201111 is 11110202012222.

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 22221020201111 - 2³⁴ = 22203840331927 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 22221020201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221020201011) 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, 43231556555 + ... + 43231557068.

It is an arithmetic number, because the mean of its divisors is an integer number (5576870828748).

Almost surely, 2^{22221020201111} is an apocalyptic number.

22221020201111 is a deficient number, since it is larger than the sum of its proper divisors (86463113881).

22221020201111 is an equidigital number, since it uses as much as digits as its factorization.

22221020201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86463113880.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221020201111 its reverse (11110202012222), we get a palindrome (33331222213333).

The spelling of 22221020201111 in words is "twenty-two trillion, two hundred twenty-one billion, twenty million, two hundred one thousand, one hundred eleven".