133000121 has 2 divisors, whose sum is σ = 133000122. Its totient is φ = 133000120.

The previous prime is 133000117. The next prime is 133000139. The reversal of 133000121 is 121000331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113955625 + 19044496 = 10675^2 + 4364^2 .

It is an emirp because it is prime and its reverse (121000331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133000121 - 2² = 133000117 is a prime.

It is a super-3 number, since 3×133000121³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133000321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66500060 + 66500061.

It is an arithmetic number, because the mean of its divisors is an integer number (66500061).

Almost surely, 2^133000121 is an apocalyptic number.

It is an amenable number.

133000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

133000121 is an equidigital number, since it uses as much as digits as its factorization.

133000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 133000121 is about 11532.5678406849. The cubic root of 133000121 is about 510.4470269973.

Adding to 133000121 its reverse (121000331), we get a palindrome (254000452).

The spelling of 133000121 in words is "one hundred thirty-three million, one hundred twenty-one", and thus it is an aban number.