133021033 has 4 divisors (see below), whose sum is σ = 140022160. Its totient is φ = 126019908.

The previous prime is 133021027. The next prime is 133021051. The reversal of 133021033 is 330120331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133021033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133020998 and 133021016.

It is not an unprimeable number, because it can be changed into a prime (133021013) 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 3 ways as a sum of consecutive naturals, for example, 3500535 + ... + 3500572.

It is an arithmetic number, because the mean of its divisors is an integer number (35005540).

Almost surely, 2^133021033 is an apocalyptic number.

It is an amenable number.

133021033 is a deficient number, since it is larger than the sum of its proper divisors (7001127).

133021033 is an equidigital number, since it uses as much as digits as its factorization.

133021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001126.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 133021033 is about 11533.4744548206. The cubic root of 133021033 is about 510.4737786241.

Adding to 133021033 its reverse (330120331), we get a palindrome (463141364).

The spelling of 133021033 in words is "one hundred thirty-three million, twenty-one thousand, thirty-three".