22222210211 has 2 divisors, whose sum is σ = 22222210212. Its totient is φ = 22222210210.

The previous prime is 22222210123. The next prime is 22222210217. The reversal of 22222210211 is 11201222222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222210211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22222210211.

It is not a weakly prime, because it can be changed into another prime (22222210217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111105105 + 11111105106.

It is an arithmetic number, because the mean of its divisors is an integer number (11111105106).

Almost surely, 2^22222210211 is an apocalyptic number.

22222210211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222210211 is an equidigital number, since it uses as much as digits as its factorization.

22222210211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22222210211 its reverse (11201222222), we get a palindrome (33423432433).

The spelling of 22222210211 in words is "twenty-two billion, two hundred twenty-two million, two hundred ten thousand, two hundred eleven".