12222211123 has 2 divisors, whose sum is σ = 12222211124. Its totient is φ = 12222211122.

The previous prime is 12222211097. The next prime is 12222211163. The reversal of 12222211123 is 32111222221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222211123 is a prime.

It is a super-2 number, since 2×12222211123² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12222211123.

It is not a weakly prime, because it can be changed into another prime (12222211163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111105561 + 6111105562.

It is an arithmetic number, because the mean of its divisors is an integer number (6111105562).

Almost surely, 2^12222211123 is an apocalyptic number.

12222211123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222211123 is an equidigital number, since it uses as much as digits as its factorization.

12222211123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

Adding to 12222211123 its reverse (32111222221), we get a palindrome (44333433344).

The spelling of 12222211123 in words is "twelve billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-three".