133110121 has 2 divisors, whose sum is σ = 133110122. Its totient is φ = 133110120.

The previous prime is 133110079. The next prime is 133110137. The reversal of 133110121 is 121011331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 19900521 = 10640^2 + 4461^2 .

It is a cyclic number.

It is not a de Polignac number, because 133110121 - 2¹⁹ = 132585833 is a prime.

It is not a weakly prime, because it can be changed into another prime (133110191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66555060 + 66555061.

It is an arithmetic number, because the mean of its divisors is an integer number (66555061).

Almost surely, 2^133110121 is an apocalyptic number.

It is an amenable number.

133110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

133110121 is an equidigital number, since it uses as much as digits as its factorization.

133110121 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 13.

The square root of 133110121 is about 11537.3359576637. The cubic root of 133110121 is about 510.5877128351.

Adding to 133110121 its reverse (121011331), we get a palindrome (254121452).

The spelling of 133110121 in words is "one hundred thirty-three million, one hundred ten thousand, one hundred twenty-one".