22222221221211 has 32 divisors (see below), whose sum is σ = 34155532984320. Its totient is φ = 12719378100000.

The previous prime is 22222221221173. The next prime is 22222221221261. The reversal of 22222221221211 is 11212212222222.

It is a happy number.

It is not a de Polignac number, because 22222221221211 - 2¹³ = 22222221213019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22222221221261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185245665 + ... + 185365586.

It is an arithmetic number, because the mean of its divisors is an integer number (1067360405760).

Almost surely, 2^{22222221221211} is an apocalyptic number.

22222221221211 is a deficient number, since it is larger than the sum of its proper divisors (11933311763109).

22222221221211 is a wasteful number, since it uses less digits than its factorization.

22222221221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370611367.

The product of its digits is 1024, while the sum is 24.

Adding to 22222221221211 its reverse (11212212222222), we get a palindrome (33434433443433).

The spelling of 22222221221211 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".