2102005001 has 8 divisors (see below), whose sum is σ = 2228205960. Its totient is φ = 1976087808.

The previous prime is 2102004959. The next prime is 2102005033. The reversal of 2102005001 is 1005002012.

It can be written as a sum of positive squares in 4 ways, for example, as 864654025 + 1237350976 = 29405^2 + 35176^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102005001 - 2¹⁴ = 2101988617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102005201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55586 + ... + 85403.

It is an arithmetic number, because the mean of its divisors is an integer number (278525745).

Almost surely, 2^2102005001 is an apocalyptic number.

It is an amenable number.

2102005001 is a deficient number, since it is larger than the sum of its proper divisors (126200959).

2102005001 is a wasteful number, since it uses less digits than its factorization.

2102005001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141883.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 2102005001 is about 45847.6280847766. The cubic root of 2102005001 is about 1280.9865849561.

Adding to 2102005001 its reverse (1005002012), we get a palindrome (3107007013).

The spelling of 2102005001 in words is "two billion, one hundred two million, five thousand, one".