2021299073 has 2 divisors, whose sum is σ = 2021299074. Its totient is φ = 2021299072.

The previous prime is 2021299069. The next prime is 2021299103. The reversal of 2021299073 is 3709921202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1234608769 + 786690304 = 35137^2 + 28048^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021299073 - 2² = 2021299069 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021299003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010649536 + 1010649537.

It is an arithmetic number, because the mean of its divisors is an integer number (1010649537).

Almost surely, 2^2021299073 is an apocalyptic number.

It is an amenable number.

2021299073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021299073 is an equidigital number, since it uses as much as digits as its factorization.

2021299073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2021299073 is about 44958.8597831395. The cubic root of 2021299073 is about 1264.3777914630.

The spelling of 2021299073 in words is "two billion, twenty-one million, two hundred ninety-nine thousand, seventy-three".