22201222211 has 4 divisors (see below), whose sum is σ = 25372825392. Its totient is φ = 19029619032.

The previous prime is 22201222189. The next prime is 22201222217. The reversal of 22201222211 is 11222210222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22201222211 - 2²⁶ = 22134113347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22201222211.

It is not an unprimeable number, because it can be changed into a prime (22201222217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585801580 + ... + 1585801593.

It is an arithmetic number, because the mean of its divisors is an integer number (6343206348).

Almost surely, 2^22201222211 is an apocalyptic number.

22201222211 is a deficient number, since it is larger than the sum of its proper divisors (3171603181).

22201222211 is an equidigital number, since it uses as much as digits as its factorization.

22201222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171603180.

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

Adding to 22201222211 its reverse (11222210222), we get a palindrome (33423432433).

The spelling of 22201222211 in words is "twenty-two billion, two hundred one million, two hundred twenty-two thousand, two hundred eleven".