2021533013 has 2 divisors, whose sum is σ = 2021533014. Its totient is φ = 2021533012.

The previous prime is 2021533001. The next prime is 2021533021. The reversal of 2021533013 is 3103351202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1061586724 + 959946289 = 32582^2 + 30983^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021533013 - 2³⁰ = 947791189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021533093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010766506 + 1010766507.

It is an arithmetic number, because the mean of its divisors is an integer number (1010766507).

Almost surely, 2^2021533013 is an apocalyptic number.

It is an amenable number.

2021533013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021533013 is an equidigital number, since it uses as much as digits as its factorization.

2021533013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2021533013 is about 44961.4614197537. The cubic root of 2021533013 is about 1264.4265682016.

Adding to 2021533013 its reverse (3103351202), we get a palindrome (5124884215).

The spelling of 2021533013 in words is "two billion, twenty-one million, five hundred thirty-three thousand, thirteen".