22021101211 has 4 divisors (see below), whose sum is σ = 22029238792. Its totient is φ = 22012963632.

The previous prime is 22021101173. The next prime is 22021101247. The reversal of 22021101211 is 11210112022.

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 22021101211 - 2¹³ = 22021093019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021101191 and 22021101200.

It is not an unprimeable number, because it can be changed into a prime (22021101511) 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, 4064730 + ... + 4070143.

It is an arithmetic number, because the mean of its divisors is an integer number (5507309698).

Almost surely, 2^22021101211 is an apocalyptic number.

22021101211 is a deficient number, since it is larger than the sum of its proper divisors (8137581).

22021101211 is an equidigital number, since it uses as much as digits as its factorization.

22021101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8137580.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22021101211 its reverse (11210112022), we get a palindrome (33231213233).

The spelling of 22021101211 in words is "twenty-two billion, twenty-one million, one hundred one thousand, two hundred eleven".