12121304233 has 2 divisors, whose sum is σ = 12121304234. Its totient is φ = 12121304232.

The previous prime is 12121304197. The next prime is 12121304257. The reversal of 12121304233 is 33240312121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11193005209 + 928299024 = 105797^2 + 30468^2 .

It is an emirp because it is prime and its reverse (33240312121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12121304233 - 2⁹ = 12121303721 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121304033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060652116 + 6060652117.

It is an arithmetic number, because the mean of its divisors is an integer number (6060652117).

Almost surely, 2^12121304233 is an apocalyptic number.

It is an amenable number.

12121304233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121304233 is an equidigital number, since it uses as much as digits as its factorization.

12121304233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12121304233 its reverse (33240312121), we get a palindrome (45361616354).

The spelling of 12121304233 in words is "twelve billion, one hundred twenty-one million, three hundred four thousand, two hundred thirty-three".