133134121 has 16 divisors (see below), whose sum is σ = 143035200. Its totient is φ = 123552000.

The previous prime is 133134107. The next prime is 133134137. The reversal of 133134121 is 121431331.

It is a cyclic number.

It is not a de Polignac number, because 133134121 - 2¹⁹ = 132609833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133134101) 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 in 15 ways as a sum of consecutive naturals, for example, 221221 + ... + 221821.

It is an arithmetic number, because the mean of its divisors is an integer number (8939700).

Almost surely, 2^133134121 is an apocalyptic number.

It is an amenable number.

133134121 is a deficient number, since it is larger than the sum of its proper divisors (9901079).

133134121 is a wasteful number, since it uses less digits than its factorization.

133134121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840.

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

The square root of 133134121 is about 11538.3760122471. The cubic root of 133134121 is about 510.6183976261.

Adding to 133134121 its reverse (121431331), we get a palindrome (254565452).

The spelling of 133134121 in words is "one hundred thirty-three million, one hundred thirty-four thousand, one hundred twenty-one".