33521312117 has 2 divisors, whose sum is σ = 33521312118. Its totient is φ = 33521312116.

The previous prime is 33521312107. The next prime is 33521312131. The reversal of 33521312117 is 71121312533.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22489801156 + 11031510961 = 149966^2 + 105031^2 .

It is an emirp because it is prime and its reverse (71121312533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33521312117 - 2⁸ = 33521311861 is a prime.

It is a super-2 number, since 2×33521312117² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33521312117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33521312107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16760656058 + 16760656059.

It is an arithmetic number, because the mean of its divisors is an integer number (16760656059).

Almost surely, 2^33521312117 is an apocalyptic number.

It is an amenable number.

33521312117 is a deficient number, since it is larger than the sum of its proper divisors (1).

33521312117 is an equidigital number, since it uses as much as digits as its factorization.

33521312117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The spelling of 33521312117 in words is "thirty-three billion, five hundred twenty-one million, three hundred twelve thousand, one hundred seventeen".