122222112211 has 4 divisors (see below), whose sum is σ = 126164761024. Its totient is φ = 118279463400.

The previous prime is 122222112203. The next prime is 122222112293. The reversal of 122222112211 is 112211222221.

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 122222112211 - 2³ = 122222112203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122222119211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1971324360 + ... + 1971324421.

It is an arithmetic number, because the mean of its divisors is an integer number (31541190256).

Almost surely, 2^122222112211 is an apocalyptic number.

122222112211 is a deficient number, since it is larger than the sum of its proper divisors (3942648813).

122222112211 is an equidigital number, since it uses as much as digits as its factorization.

122222112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942648812.

The product of its digits is 128, while the sum is 19.

Adding to 122222112211 its reverse (112211222221), we get a palindrome (234433334432).

The spelling of 122222112211 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, two hundred eleven".