22211102020221 has 12 divisors (see below), whose sum is σ = 32608648868380. Its totient is φ = 14564657062080.

The previous prime is 22211102020207. The next prime is 22211102020241. The reversal of 22211102020221 is 12202020111222.

It is a happy number.

22211102020221 is a `hidden beast` number, since 22 + 211 + 10 + 202 + 0 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6842859564996 + 15368242455225 = 2615886^2 + 3920235^2 .

It is not a de Polignac number, because 22211102020221 - 2²¹ = 22211099923069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211102020194 and 22211102020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211102020241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20228689816 + ... + 20228690913.

Almost surely, 2^{22211102020221} is an apocalyptic number.

It is an amenable number.

22211102020221 is a deficient number, since it is larger than the sum of its proper divisors (10397546848159).

22211102020221 is a wasteful number, since it uses less digits than its factorization.

22211102020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40457380796 (or 40457380793 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22211102020221 its reverse (12202020111222), we get a palindrome (34413122131443).

The spelling of 22211102020221 in words is "twenty-two trillion, two hundred eleven billion, one hundred two million, twenty thousand, two hundred twenty-one".