2821300621 has 2 divisors, whose sum is σ = 2821300622. Its totient is φ = 2821300620.

The previous prime is 2821300619. The next prime is 2821300639. The reversal of 2821300621 is 1260031282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1748410596 + 1072890025 = 41814^2 + 32755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2821300621 - 2¹ = 2821300619 is a prime.

Together with 2821300619, 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 (2821300021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410650310 + 1410650311.

It is an arithmetic number, because the mean of its divisors is an integer number (1410650311).

Almost surely, 2^2821300621 is an apocalyptic number.

It is an amenable number.

2821300621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821300621 is an equidigital number, since it uses as much as digits as its factorization.

2821300621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2821300621 is about 53115.9168329042. The cubic root of 2821300621 is about 1413.0248127980.

The spelling of 2821300621 in words is "two billion, eight hundred twenty-one million, three hundred thousand, six hundred twenty-one".