22020012211 has 4 divisors (see below), whose sum is σ = 22038107112. Its totient is φ = 22001917312.

The previous prime is 22020012199. The next prime is 22020012241. The reversal of 22020012211 is 11221002022.

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 22020012211 - 2¹⁷ = 22019881139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020012191 and 22020012200.

It is not an unprimeable number, because it can be changed into a prime (22020012241) 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, 9045625 + ... + 9048058.

It is an arithmetic number, because the mean of its divisors is an integer number (5509526778).

Almost surely, 2^22020012211 is an apocalyptic number.

22020012211 is a deficient number, since it is larger than the sum of its proper divisors (18094901).

22020012211 is a wasteful number, since it uses less digits than its factorization.

22020012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18094900.

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

Adding to 22020012211 its reverse (11221002022), we get a palindrome (33241014233).

The spelling of 22020012211 in words is "twenty-two billion, twenty million, twelve thousand, two hundred eleven".