133643015205221 has 2 divisors, whose sum is σ = 133643015205222. Its totient is φ = 133643015205220.

The previous prime is 133643015205173. The next prime is 133643015205311. The reversal of 133643015205221 is 122502510346331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121169679444100 + 12473335761121 = 11007710^2 + 3531761^2 .

It is a cyclic number.

It is not a de Polignac number, because 133643015205221 - 2⁶ = 133643015205157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133643015205121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66821507602610 + 66821507602611.

It is an arithmetic number, because the mean of its divisors is an integer number (66821507602611).

Almost surely, 2^{133643015205221} is an apocalyptic number.

It is an amenable number.

133643015205221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133643015205221 is an equidigital number, since it uses as much as digits as its factorization.

133643015205221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 133643015205221 in words is "one hundred thirty-three trillion, six hundred forty-three billion, fifteen million, two hundred five thousand, two hundred twenty-one".