133211 has 4 divisors (see below), whose sum is σ = 143472. Its totient is φ = 122952.

The previous prime is 133201. The next prime is 133213. The reversal of 133211 is 112331.

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

It is a cyclic number.

It is not a de Polignac number, because 133211 - 2¹⁴ = 116827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133192 and 133201.

It is not an unprimeable number, because it can be changed into a prime (133213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5111 + ... + 5136.

It is an arithmetic number, because the mean of its divisors is an integer number (35868).

2¹³³²¹¹ is an apocalyptic number.

133211 is a deficient number, since it is larger than the sum of its proper divisors (10261).

133211 is a wasteful number, since it uses less digits than its factorization.

133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260.

The product of its digits is 18, while the sum is 11.

The square root of 133211 is about 364.9808214139. The cubic root of 133211 is about 51.0716665142.

Adding to 133211 its reverse (112331), we get a palindrome (245542).

The spelling of 133211 in words is "one hundred thirty-three thousand, two hundred eleven".