22222021211 has 8 divisors (see below), whose sum is σ = 23938378464. Its totient is φ = 20506659840.

The previous prime is 22222021201. The next prime is 22222021231. The reversal of 22222021211 is 11212022222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22222021211 - 2¹⁰ = 22222020187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22222021211.

It is not an unprimeable number, because it can be changed into a prime (22222021201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202295 + ... + 292176.

It is an arithmetic number, because the mean of its divisors is an integer number (2992297308).

Almost surely, 2^22222021211 is an apocalyptic number.

22222021211 is a deficient number, since it is larger than the sum of its proper divisors (1716357253).

22222021211 is a wasteful number, since it uses less digits than its factorization.

22222021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497941.

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

Adding to 22222021211 its reverse (11212022222), we get a palindrome (33434043433).

The spelling of 22222021211 in words is "twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred eleven".