133521126331 has 2 divisors, whose sum is σ = 133521126332. Its totient is φ = 133521126330.

The previous prime is 133521126307. The next prime is 133521126353. The reversal of 133521126331 is 133621125331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133521126331 - 2⁷ = 133521126203 is a prime.

It is a super-2 number, since 2×133521126331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133521126293 and 133521126302.

It is not a weakly prime, because it can be changed into another prime (133521126371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66760563165 + 66760563166.

It is an arithmetic number, because the mean of its divisors is an integer number (66760563166).

Almost surely, 2^133521126331 is an apocalyptic number.

133521126331 is a deficient number, since it is larger than the sum of its proper divisors (1).

133521126331 is an equidigital number, since it uses as much as digits as its factorization.

133521126331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The spelling of 133521126331 in words is "one hundred thirty-three billion, five hundred twenty-one million, one hundred twenty-six thousand, three hundred thirty-one".