133020211 has 4 divisors (see below), whose sum is σ = 133550424. Its totient is φ = 132490000.

The previous prime is 133020137. The next prime is 133020227. The reversal of 133020211 is 112020331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112020331 = 661 ⋅169471.

It is a cyclic number.

It is not a de Polignac number, because 133020211 - 2¹¹ = 133018163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133020191 and 133020200.

It is not an unprimeable number, because it can be changed into a prime (133020241) 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, 264730 + ... + 265231.

It is an arithmetic number, because the mean of its divisors is an integer number (33387606).

Almost surely, 2^133020211 is an apocalyptic number.

133020211 is a deficient number, since it is larger than the sum of its proper divisors (530213).

133020211 is an equidigital number, since it uses as much as digits as its factorization.

133020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530212.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 133020211 is about 11533.4388193635. The cubic root of 133020211 is about 510.4727271355.

Adding to 133020211 its reverse (112020331), we get a palindrome (245040542).

The spelling of 133020211 in words is "one hundred thirty-three million, twenty thousand, two hundred eleven".