12121133 has 2 divisors, whose sum is σ = 12121134. Its totient is φ = 12121132.

The previous prime is 12121121. The next prime is 12121147. The reversal of 12121133 is 33112121.

It is an a-pointer prime, because the next prime (12121147) can be obtained adding 12121133 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12096484 + 24649 = 3478^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121133 - 2¹⁸ = 11858989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060566 + 6060567.

It is an arithmetic number, because the mean of its divisors is an integer number (6060567).

Almost surely, 2^12121133 is an apocalyptic number.

It is an amenable number.

12121133 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121133 is an equidigital number, since it uses as much as digits as its factorization.

12121133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 14.

The square root of 12121133 is about 3481.5417561764. The cubic root of 12121133 is about 229.7106190467.

Adding to 12121133 its reverse (33112121), we get a palindrome (45233254).

The spelling of 12121133 in words is "twelve million, one hundred twenty-one thousand, one hundred thirty-three".