22222211123 has 16 divisors (see below), whose sum is σ = 26166795456. Its totient is φ = 18478679040.

The previous prime is 22222211117. The next prime is 22222211129. The reversal of 22222211123 is 32111222222.

It is an interprime number because it is at equal distance from previous prime (22222211117) and next prime (22222211129).

It is a cyclic number.

It is not a de Polignac number, because 22222211123 - 2⁶ = 22222211059 is a prime.

It is a super-2 number, since 2×22222211123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222211095 and 22222211104.

It is not an unprimeable number, because it can be changed into a prime (22222211129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325286 + ... + 387627.

It is an arithmetic number, because the mean of its divisors is an integer number (1635424716).

Almost surely, 2^22222211123 is an apocalyptic number.

22222211123 is a deficient number, since it is larger than the sum of its proper divisors (3944584333).

22222211123 is an equidigital number, since it uses as much as digits as its factorization.

22222211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713054.

The product of its digits is 384, while the sum is 20.

Adding to 22222211123 its reverse (32111222222), we get a palindrome (54333433345).

The spelling of 22222211123 in words is "twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-three".