22020021211 has 4 divisors (see below), whose sum is σ = 22348678312. Its totient is φ = 21691364112.

The previous prime is 22020021209. The next prime is 22020021217. The reversal of 22020021211 is 11212002022.

It is a happy number.

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 22020021211 - 2¹ = 22020021209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020021191 and 22020021200.

It is not an unprimeable number, because it can be changed into a prime (22020021217) 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, 164328450 + ... + 164328583.

It is an arithmetic number, because the mean of its divisors is an integer number (5587169578).

Almost surely, 2^22020021211 is an apocalyptic number.

22020021211 is a deficient number, since it is larger than the sum of its proper divisors (328657101).

22020021211 is an equidigital number, since it uses as much as digits as its factorization.

22020021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328657100.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22020021211 its reverse (11212002022), we get a palindrome (33232023233).

The spelling of 22020021211 in words is "twenty-two billion, twenty million, twenty-one thousand, two hundred eleven".