133503434021 has 2 divisors, whose sum is σ = 133503434022. Its totient is φ = 133503434020.

The previous prime is 133503433993. The next prime is 133503434063. The reversal of 133503434021 is 120434305331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133392952900 + 110481121 = 365230^2 + 10511^2 .

It is a cyclic number.

It is not a de Polignac number, because 133503434021 - 2²⁶ = 133436325157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133503434081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66751717010 + 66751717011.

It is an arithmetic number, because the mean of its divisors is an integer number (66751717011).

Almost surely, 2^133503434021 is an apocalyptic number.

It is an amenable number.

133503434021 is a deficient number, since it is larger than the sum of its proper divisors (1).

133503434021 is an equidigital number, since it uses as much as digits as its factorization.

133503434021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 133503434021 its reverse (120434305331), we get a palindrome (253937739352).

The spelling of 133503434021 in words is "one hundred thirty-three billion, five hundred three million, four hundred thirty-four thousand, twenty-one".