2002021529 has 2 divisors, whose sum is σ = 2002021530. Its totient is φ = 2002021528.

The previous prime is 2002021459. The next prime is 2002021531. The reversal of 2002021529 is 9251202002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380865600 + 621155929 = 37160^2 + 24923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002021529 is a prime.

It is a Sophie Germain prime.

Together with 2002021531, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2002021559) 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, 1001010764 + 1001010765.

It is an arithmetic number, because the mean of its divisors is an integer number (1001010765).

Almost surely, 2^2002021529 is an apocalyptic number.

It is an amenable number.

2002021529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002021529 is an equidigital number, since it uses as much as digits as its factorization.

2002021529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2002021529 is about 44743.9552230243. The cubic root of 2002021529 is about 1260.3454014438.

The spelling of 2002021529 in words is "two billion, two million, twenty-one thousand, five hundred twenty-nine".