22220021211 has 16 divisors (see below), whose sum is σ = 30168616320. Its totient is φ = 14543049920.

The previous prime is 22220021177. The next prime is 22220021261. The reversal of 22220021211 is 11212002222.

It is a cyclic number.

It is not a de Polignac number, because 22220021211 - 2¹¹ = 22220019163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22220021261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52216 + ... + 217178.

It is an arithmetic number, because the mean of its divisors is an integer number (1885538520).

Almost surely, 2^22220021211 is an apocalyptic number.

22220021211 is a deficient number, since it is larger than the sum of its proper divisors (7948595109).

22220021211 is a wasteful number, since it uses less digits than its factorization.

22220021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165786.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22220021211 its reverse (11212002222), we get a palindrome (33432023433).

The spelling of 22220021211 in words is "twenty-two billion, two hundred twenty million, twenty-one thousand, two hundred eleven".