133165111 has 2 divisors, whose sum is σ = 133165112. Its totient is φ = 133165110.

The previous prime is 133165099. The next prime is 133165121. The reversal of 133165111 is 111561331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133165111 - 2⁵ = 133165079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133165121) 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 as a sum of consecutive naturals, namely, 66582555 + 66582556.

It is an arithmetic number, because the mean of its divisors is an integer number (66582556).

Almost surely, 2^133165111 is an apocalyptic number.

133165111 is a deficient number, since it is larger than the sum of its proper divisors (1).

133165111 is an equidigital number, since it uses as much as digits as its factorization.

133165111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 22.

The square root of 133165111 is about 11539.7188440620. The cubic root of 133165111 is about 510.6580139077.

The spelling of 133165111 in words is "one hundred thirty-three million, one hundred sixty-five thousand, one hundred eleven".