3520582850221 has 2 divisors, whose sum is σ = 3520582850222. Its totient is φ = 3520582850220.

The previous prime is 3520582850219. The next prime is 3520582850287. The reversal of 3520582850221 is 1220582850253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3277421433225 + 243161416996 = 1810365^2 + 493114^2 .

It is a cyclic number.

It is not a de Polignac number, because 3520582850221 - 2¹ = 3520582850219 is a prime.

Together with 3520582850219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3520582830221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760291425110 + 1760291425111.

It is an arithmetic number, because the mean of its divisors is an integer number (1760291425111).

Almost surely, 2^{3520582850221} is an apocalyptic number.

It is an amenable number.

3520582850221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520582850221 is an equidigital number, since it uses as much as digits as its factorization.

3520582850221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 3520582850221 in words is "three trillion, five hundred twenty billion, five hundred eighty-two million, eight hundred fifty thousand, two hundred twenty-one".