22211211205 has 32 divisors (see below), whose sum is σ = 28372633344. Its totient is φ = 16656600576.

The previous prime is 22211211203. The next prime is 22211211227. The reversal of 22211211205 is 50211211222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22211211205 - 2¹ = 22211211203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211211203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1510569 + ... + 1525201.

It is an arithmetic number, because the mean of its divisors is an integer number (886644792).

Almost surely, 2^22211211205 is an apocalyptic number.

It is an amenable number.

22211211205 is a deficient number, since it is larger than the sum of its proper divisors (6161422139).

22211211205 is a wasteful number, since it uses less digits than its factorization.

22211211205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14925.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 22211211205 its reverse (50211211222), we get a palindrome (72422422427).

The spelling of 22211211205 in words is "twenty-two billion, two hundred eleven million, two hundred eleven thousand, two hundred five".