12122333231 has 2 divisors, whose sum is σ = 12122333232. Its totient is φ = 12122333230.

The previous prime is 12122333221. The next prime is 12122333233. The reversal of 12122333231 is 13233322121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122333231 is a prime.

It is a super-2 number, since 2×12122333231² (a number of 21 digits) contains 22 as substring.

Together with 12122333233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122333197 and 12122333206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122333233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061166615 + 6061166616.

It is an arithmetic number, because the mean of its divisors is an integer number (6061166616).

Almost surely, 2^12122333231 is an apocalyptic number.

12122333231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122333231 is an equidigital number, since it uses as much as digits as its factorization.

12122333231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

Adding to 12122333231 its reverse (13233322121), we get a palindrome (25355655352).

The spelling of 12122333231 in words is "twelve billion, one hundred twenty-two million, three hundred thirty-three thousand, two hundred thirty-one".