133213211 has 8 divisors (see below), whose sum is σ = 137976480. Its totient is φ = 128461312.

The previous prime is 133213189. The next prime is 133213229. The reversal of 133213211 is 112312331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133213211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133213211.

It is not an unprimeable number, because it can be changed into a prime (133213271) 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, 26171 + ... + 30843.

It is an arithmetic number, because the mean of its divisors is an integer number (17247060).

Almost surely, 2^133213211 is an apocalyptic number.

133213211 is a deficient number, since it is larger than the sum of its proper divisors (4763269).

133213211 is an equidigital number, since it uses as much as digits as its factorization.

133213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685.

The product of its digits is 108, while the sum is 17.

The square root of 133213211 is about 11541.8027621338. The cubic root of 133213211 is about 510.7194907051.

Adding to 133213211 its reverse (112312331), we get a palindrome (245525542).

The spelling of 133213211 in words is "one hundred thirty-three million, two hundred thirteen thousand, two hundred eleven".