133365101 has 2 divisors, whose sum is σ = 133365102. Its totient is φ = 133365100.

The previous prime is 133365091. The next prime is 133365137. The reversal of 133365101 is 101563331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110229001 + 23136100 = 10499^2 + 4810^2 .

It is a cyclic number.

It is not a de Polignac number, because 133365101 - 2¹⁴ = 133348717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133365151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66682550 + 66682551.

It is an arithmetic number, because the mean of its divisors is an integer number (66682551).

Almost surely, 2^133365101 is an apocalyptic number.

It is an amenable number.

133365101 is a deficient number, since it is larger than the sum of its proper divisors (1).

133365101 is an equidigital number, since it uses as much as digits as its factorization.

133365101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 133365101 is about 11548.3808821843. The cubic root of 133365101 is about 510.9135248115.

The spelling of 133365101 in words is "one hundred thirty-three million, three hundred sixty-five thousand, one hundred one".