133221033 has 12 divisors (see below), whose sum is σ = 209924208. Its totient is φ = 80739960.

The previous prime is 133221031. The next prime is 133221047. The reversal of 133221033 is 330122331.

It is not a de Polignac number, because 133221033 - 2¹ = 133221031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133220997 and 133221015.

It is not an unprimeable number, because it can be changed into a prime (133221031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672735 + ... + 672932.

It is an arithmetic number, because the mean of its divisors is an integer number (17493684).

Almost surely, 2^133221033 is an apocalyptic number.

It is an amenable number.

133221033 is a deficient number, since it is larger than the sum of its proper divisors (76703175).

133221033 is a wasteful number, since it uses less digits than its factorization.

133221033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345684 (or 1345681 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133221033 is about 11542.1416123699. The cubic root of 133221033 is about 510.7294866348.

Adding to 133221033 its reverse (330122331), we get a palindrome (463343364).

The spelling of 133221033 in words is "one hundred thirty-three million, two hundred twenty-one thousand, thirty-three".