33521212073 has 2 divisors, whose sum is σ = 33521212074. Its totient is φ = 33521212072.

The previous prime is 33521212033. The next prime is 33521212093. The reversal of 33521212073 is 37021212533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18868593769 + 14652618304 = 137363^2 + 121048^2 .

It is a cyclic number.

It is not a de Polignac number, because 33521212073 - 2¹⁸ = 33520949929 is a prime.

It is a super-2 number, since 2×33521212073² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33521212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16760606036 + 16760606037.

It is an arithmetic number, because the mean of its divisors is an integer number (16760606037).

Almost surely, 2^33521212073 is an apocalyptic number.

It is an amenable number.

33521212073 is a deficient number, since it is larger than the sum of its proper divisors (1).

33521212073 is an equidigital number, since it uses as much as digits as its factorization.

33521212073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 33521212073 in words is "thirty-three billion, five hundred twenty-one million, two hundred twelve thousand, seventy-three".