12122122223 has 2 divisors, whose sum is σ = 12122122224. Its totient is φ = 12122122222.

The previous prime is 12122122183. The next prime is 12122122267. The reversal of 12122122223 is 32222122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122122223 - 2²⁰ = 12121073647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122122195 and 12122122204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122152223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061061111 + 6061061112.

It is an arithmetic number, because the mean of its divisors is an integer number (6061061112).

Almost surely, 2^12122122223 is an apocalyptic number.

12122122223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122122223 is an equidigital number, since it uses as much as digits as its factorization.

12122122223 is an evil number, because the sum of its binary digits is even.

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

Adding to 12122122223 its reverse (32222122121), we get a palindrome (44344244344).

The spelling of 12122122223 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-three".