133501211 has 2 divisors, whose sum is σ = 133501212. Its totient is φ = 133501210.

The previous prime is 133501189. The next prime is 133501213. The reversal of 133501211 is 112105331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133501211 is a prime.

Together with 133501213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133501211.

It is not a weakly prime, because it can be changed into another prime (133501213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66750605 + 66750606.

It is an arithmetic number, because the mean of its divisors is an integer number (66750606).

Almost surely, 2^133501211 is an apocalyptic number.

133501211 is a deficient number, since it is larger than the sum of its proper divisors (1).

133501211 is an equidigital number, since it uses as much as digits as its factorization.

133501211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 133501211 is about 11554.2724132677. The cubic root of 133501211 is about 511.0872754042.

Adding to 133501211 its reverse (112105331), we get a palindrome (245606542).

The spelling of 133501211 in words is "one hundred thirty-three million, five hundred one thousand, two hundred eleven".