2021305051 has 2 divisors, whose sum is σ = 2021305052. Its totient is φ = 2021305050.

The previous prime is 2021305031. The next prime is 2021305087. The reversal of 2021305051 is 1505031202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021305051 - 2¹³ = 2021296859 is a prime.

It is a super-2 number, since 2×2021305051² = 8171348218396225202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021305001) 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, 1010652525 + 1010652526.

It is an arithmetic number, because the mean of its divisors is an integer number (1010652526).

Almost surely, 2^2021305051 is an apocalyptic number.

2021305051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021305051 is an equidigital number, since it uses as much as digits as its factorization.

2021305051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 2021305051 is about 44958.9262660931. The cubic root of 2021305051 is about 1264.3790379292.

Adding to 2021305051 its reverse (1505031202), we get a palindrome (3526336253).

The spelling of 2021305051 in words is "two billion, twenty-one million, three hundred five thousand, fifty-one".