133211300221 has 2 divisors, whose sum is σ = 133211300222. Its totient is φ = 133211300220.

The previous prime is 133211300213. The next prime is 133211300231. The reversal of 133211300221 is 122003112331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107004223225 + 26207076996 = 327115^2 + 161886^2 .

It is a cyclic number.

It is not a de Polignac number, because 133211300221 - 2³ = 133211300213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133211300231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66605650110 + 66605650111.

It is an arithmetic number, because the mean of its divisors is an integer number (66605650111).

Almost surely, 2^133211300221 is an apocalyptic number.

It is an amenable number.

133211300221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133211300221 is an equidigital number, since it uses as much as digits as its factorization.

133211300221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 133211300221 its reverse (122003112331), we get a palindrome (255214412552).

The spelling of 133211300221 in words is "one hundred thirty-three billion, two hundred eleven million, three hundred thousand, two hundred twenty-one".