12120311233 has 2 divisors, whose sum is σ = 12120311234. Its totient is φ = 12120311232.

The previous prime is 12120311197. The next prime is 12120311303. The reversal of 12120311233 is 33211302121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7415448769 + 4704862464 = 86113^2 + 68592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120311233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120311233.

It is not a weakly prime, because it can be changed into another prime (12120321233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060155616 + 6060155617.

It is an arithmetic number, because the mean of its divisors is an integer number (6060155617).

Almost surely, 2^12120311233 is an apocalyptic number.

It is an amenable number.

12120311233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120311233 is an equidigital number, since it uses as much as digits as its factorization.

12120311233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12120311233 its reverse (33211302121), we get a palindrome (45331613354).

The spelling of 12120311233 in words is "twelve billion, one hundred twenty million, three hundred eleven thousand, two hundred thirty-three".