133220333 has 8 divisors (see below), whose sum is σ = 135472128. Its totient is φ = 130987584.

The previous prime is 133220327. The next prime is 133220359. The reversal of 133220333 is 333022331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133220333 - 2¹⁰ = 133219309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133220363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9710 + ... + 18992.

It is an arithmetic number, because the mean of its divisors is an integer number (16934016).

Almost surely, 2^133220333 is an apocalyptic number.

It is an amenable number.

133220333 is a deficient number, since it is larger than the sum of its proper divisors (2251795).

133220333 is a wasteful number, since it uses less digits than its factorization.

133220333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 133220333 is about 11542.1112886681. Note that the first 3 decimals coincide. The cubic root of 133220333 is about 510.7285921032.

Adding to 133220333 its reverse (333022331), we get a palindrome (466242664).

The spelling of 133220333 in words is "one hundred thirty-three million, two hundred twenty thousand, three hundred thirty-three".