222021211111 has 16 divisors (see below), whose sum is σ = 254259802368. Its totient is φ = 189913147200.

The previous prime is 222021211103. The next prime is 222021211141. The reversal of 222021211111 is 111112120222.

It is not a de Polignac number, because 222021211111 - 2³ = 222021211103 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 (222021211141) 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, 18072291 + ... + 18084571.

It is an arithmetic number, because the mean of its divisors is an integer number (15891237648).

Almost surely, 2^222021211111 is an apocalyptic number.

222021211111 is a deficient number, since it is larger than the sum of its proper divisors (32238591257).

222021211111 is a wasteful number, since it uses less digits than its factorization.

222021211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17382.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222021211111 its reverse (111112120222), we get a palindrome (333133331333).

The spelling of 222021211111 in words is "two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, one hundred eleven".