22211211605 has 16 divisors (see below), whose sum is σ = 29083169664. Its totient is φ = 16149900480.

The previous prime is 22211211559. The next prime is 22211211613. The reversal of 22211211605 is 50611211222.

It is not a de Polignac number, because 22211211605 - 2⁸ = 22211211349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 208007 + ... + 296123.

It is an arithmetic number, because the mean of its divisors is an integer number (1817698104).

Almost surely, 2^22211211605 is an apocalyptic number.

It is an amenable number.

22211211605 is a deficient number, since it is larger than the sum of its proper divisors (6871958059).

22211211605 is a wasteful number, since it uses less digits than its factorization.

22211211605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92716.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 22211211605 its reverse (50611211222), we get a palindrome (72822422827).

The spelling of 22211211605 in words is "twenty-two billion, two hundred eleven million, two hundred eleven thousand, six hundred five".