133398211 has 4 divisors (see below), whose sum is σ = 133660800. Its totient is φ = 133135624.

The previous prime is 133398203. The next prime is 133398247. The reversal of 133398211 is 112893331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112893331 = 179 ⋅630689.

It is a cyclic number.

It is not a de Polignac number, because 133398211 - 2³ = 133398203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133398311) 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, 130531 + ... + 131548.

It is an arithmetic number, because the mean of its divisors is an integer number (33415200).

Almost surely, 2^133398211 is an apocalyptic number.

133398211 is a deficient number, since it is larger than the sum of its proper divisors (262589).

133398211 is an equidigital number, since it uses as much as digits as its factorization.

133398211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262588.

The product of its digits is 3888, while the sum is 31.

The square root of 133398211 is about 11549.8143275119. The cubic root of 133398211 is about 510.9558021064.

The spelling of 133398211 in words is "one hundred thirty-three million, three hundred ninety-eight thousand, two hundred eleven".