133101217 has 2 divisors, whose sum is σ = 133101218. Its totient is φ = 133101216.

The previous prime is 133101209. The next prime is 133101233. The reversal of 133101217 is 712101331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103245921 + 29855296 = 10161^2 + 5464^2 .

It is an emirp because it is prime and its reverse (712101331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133101217 - 2³ = 133101209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133101194 and 133101203.

It is not a weakly prime, because it can be changed into another prime (133102217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66550608 + 66550609.

It is an arithmetic number, because the mean of its divisors is an integer number (66550609).

Almost surely, 2^133101217 is an apocalyptic number.

It is an amenable number.

133101217 is a deficient number, since it is larger than the sum of its proper divisors (1).

133101217 is an equidigital number, since it uses as much as digits as its factorization.

133101217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 133101217 is about 11536.9500735680. The cubic root of 133101217 is about 510.5763278397.

Adding to 133101217 its reverse (712101331), we get a palindrome (845202548).

The spelling of 133101217 in words is "one hundred thirty-three million, one hundred one thousand, two hundred seventeen".