133111201 has 4 divisors (see below), whose sum is σ = 133846804. Its totient is φ = 132375600.

The previous prime is 133111177. The next prime is 133111213. The reversal of 133111201 is 102111331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8208225 + 124902976 = 2865^2 + 11176^2 .

It is a cyclic number.

It is not a de Polignac number, because 133111201 - 2⁹ = 133110689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133111261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367530 + ... + 367891.

It is an arithmetic number, because the mean of its divisors is an integer number (33461701).

Almost surely, 2^133111201 is an apocalyptic number.

It is an amenable number.

133111201 is a deficient number, since it is larger than the sum of its proper divisors (735603).

133111201 is an equidigital number, since it uses as much as digits as its factorization.

133111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735602.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 133111201 is about 11537.3827621346. The cubic root of 133111201 is about 510.5890937300.

Adding to 133111201 its reverse (102111331), we get a palindrome (235222532).

The spelling of 133111201 in words is "one hundred thirty-three million, one hundred eleven thousand, two hundred one".