2828512021 has 2 divisors, whose sum is σ = 2828512022. Its totient is φ = 2828512020.

The previous prime is 2828512019. The next prime is 2828512033. The reversal of 2828512021 is 1202158282.

2828512021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2286274225 + 542237796 = 47815^2 + 23286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2828512021 - 2¹ = 2828512019 is a prime.

Together with 2828512019, 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 (2828512051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1414256010 + 1414256011.

It is an arithmetic number, because the mean of its divisors is an integer number (1414256011).

Almost surely, 2^2828512021 is an apocalyptic number.

It is an amenable number.

2828512021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2828512021 is an equidigital number, since it uses as much as digits as its factorization.

2828512021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 2828512021 is about 53183.7571162474. The cubic root of 2828512021 is about 1414.2277116072.

The spelling of 2828512021 in words is "two billion, eight hundred twenty-eight million, five hundred twelve thousand, twenty-one".