133241211213521 has 2 divisors, whose sum is σ = 133241211213522. Its totient is φ = 133241211213520.

The previous prime is 133241211213511. The next prime is 133241211213557. The reversal of 133241211213521 is 125312112142331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118328947723921 + 14912263489600 = 10877911^2 + 3861640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133241211213521 is a prime.

It is a super-2 number, since 2×133241211213521² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133241211213511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66620605606760 + 66620605606761.

It is an arithmetic number, because the mean of its divisors is an integer number (66620605606761).

Almost surely, 2^{133241211213521} is an apocalyptic number.

It is an amenable number.

133241211213521 is a deficient number, since it is larger than the sum of its proper divisors (1).

133241211213521 is an equidigital number, since it uses as much as digits as its factorization.

133241211213521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

Adding to 133241211213521 its reverse (125312112142331), we get a palindrome (258553323355852).

The spelling of 133241211213521 in words is "one hundred thirty-three trillion, two hundred forty-one billion, two hundred eleven million, two hundred thirteen thousand, five hundred twenty-one".