12122212222123 has 2 divisors, whose sum is σ = 12122212222124. Its totient is φ = 12122212222122.

The previous prime is 12122212222097. The next prime is 12122212222151. The reversal of 12122212222123 is 32122221222121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122212222123 - 2¹³ = 12122212213931 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122212222163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061106111061 + 6061106111062.

It is an arithmetic number, because the mean of its divisors is an integer number (6061106111062).

Almost surely, 2^{12122212222123} is an apocalyptic number.

12122212222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122212222123 is an equidigital number, since it uses as much as digits as its factorization.

12122212222123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 25.

Adding to 12122212222123 its reverse (32122221222121), we get a palindrome (44244433444244).

The spelling of 12122212222123 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-three".