3387187205021 has 2 divisors, whose sum is σ = 3387187205022. Its totient is φ = 3387187205020.

The previous prime is 3387187204987. The next prime is 3387187205047. The reversal of 3387187205021 is 1205027817833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3281220679396 + 105966525625 = 1811414^2 + 325525^2 .

It is a cyclic number.

It is not a de Polignac number, because 3387187205021 - 2¹⁸ = 3387186942877 is a prime.

It is a super-2 number, since 2×3387187205021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3387187204021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1693593602510 + 1693593602511.

It is an arithmetic number, because the mean of its divisors is an integer number (1693593602511).

Almost surely, 2^{3387187205021} is an apocalyptic number.

It is an amenable number.

3387187205021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3387187205021 is an equidigital number, since it uses as much as digits as its factorization.

3387187205021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 3387187205021 in words is "three trillion, three hundred eighty-seven billion, one hundred eighty-seven million, two hundred five thousand, twenty-one".