33320123302721 has 2 divisors, whose sum is σ = 33320123302722. Its totient is φ = 33320123302720.

The previous prime is 33320123302693. The next prime is 33320123302727. The reversal of 33320123302721 is 12720332102333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32545758502321 + 774364800400 = 5704889^2 + 879980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33320123302721 is a prime.

It is a super-2 number, since 2×33320123302721² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33320123302727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16660061651360 + 16660061651361.

It is an arithmetic number, because the mean of its divisors is an integer number (16660061651361).

Almost surely, 2^{33320123302721} is an apocalyptic number.

It is an amenable number.

33320123302721 is a deficient number, since it is larger than the sum of its proper divisors (1).

33320123302721 is an equidigital number, since it uses as much as digits as its factorization.

33320123302721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 32.

The spelling of 33320123302721 in words is "thirty-three trillion, three hundred twenty billion, one hundred twenty-three million, three hundred two thousand, seven hundred twenty-one".