133220033 has 4 divisors (see below), whose sum is σ = 134192580. Its totient is φ = 132247488.

The previous prime is 133220027. The next prime is 133220047. The reversal of 133220033 is 330022331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68690944 + 64529089 = 8288^2 + 8033^2 .

It is a cyclic number.

It is not a de Polignac number, because 133220033 - 2⁶ = 133219969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133219993 and 133220020.

It is not an unprimeable number, because it can be changed into a prime (133220083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486068 + ... + 486341.

It is an arithmetic number, because the mean of its divisors is an integer number (33548145).

Almost surely, 2^133220033 is an apocalyptic number.

It is an amenable number.

133220033 is a deficient number, since it is larger than the sum of its proper divisors (972547).

133220033 is an equidigital number, since it uses as much as digits as its factorization.

133220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972546.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 133220033 is about 11542.0982927716. The cubic root of 133220033 is about 510.7282087316.

Adding to 133220033 its reverse (330022331), we get a palindrome (463242364).

The spelling of 133220033 in words is "one hundred thirty-three million, two hundred twenty thousand, thirty-three".