222122111211 has 192 divisors, whose sum is σ = 445155809280. Its totient is φ = 103607112960.

The previous prime is 222122111203. The next prime is 222122111213. The reversal of 222122111211 is 112111221222.

222122111211 is a `hidden beast` number, since 2 + 221 + 221 + 11 + 211 = 666.

It is not a de Polignac number, because 222122111211 - 2³ = 222122111203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222122111213) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 56331306 + ... + 56335248.

It is an arithmetic number, because the mean of its divisors is an integer number (2318519840).

Almost surely, 2^222122111211 is an apocalyptic number.

222122111211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222122111211 is an abundant number, since it is smaller than the sum of its proper divisors (223033698069).

222122111211 is a wasteful number, since it uses less digits than its factorization.

222122111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043 (or 4014 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 222122111211 its reverse (112111221222), we get a palindrome (334233332433).

It can be divided in two parts, 222122 and 111211, that added together give a palindrome (333333).

The spelling of 222122111211 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred eleven".