2001020029 has 2 divisors, whose sum is σ = 2001020030. Its totient is φ = 2001020028.

The previous prime is 2001019997. The next prime is 2001020041. The reversal of 2001020029 is 9200201002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093624900 + 907395129 = 33070^2 + 30123^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001020029 - 2⁵ = 2001019997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001019994 and 2001020021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001020069) 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, 1000510014 + 1000510015.

It is an arithmetic number, because the mean of its divisors is an integer number (1000510015).

Almost surely, 2^2001020029 is an apocalyptic number.

It is an amenable number.

2001020029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001020029 is an equidigital number, since it uses as much as digits as its factorization.

2001020029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2001020029 is about 44732.7623671957. The cubic root of 2001020029 is about 1260.1352061595.

The spelling of 2001020029 in words is "two billion, one million, twenty thousand, twenty-nine".