122222222211 has 32 divisors (see below), whose sum is σ = 180983116800. Its totient is φ = 73028169216.

The previous prime is 122222222197. The next prime is 122222222237. The reversal of 122222222211 is 112222222221.

It is not a de Polignac number, because 122222222211 - 2⁶ = 122222222147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122222222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 600361 + ... + 777738.

It is an arithmetic number, because the mean of its divisors is an integer number (5655722400).

Almost surely, 2^122222222211 is an apocalyptic number.

122222222211 is a deficient number, since it is larger than the sum of its proper divisors (58760894589).

122222222211 is a wasteful number, since it uses less digits than its factorization.

122222222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378203.

The product of its digits is 512, while the sum is 21.

Adding to 122222222211 its reverse (112222222221), we get a palindrome (234444444432).

The spelling of 122222222211 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".