202102002001 has 8 divisors (see below), whose sum is σ = 202504538600. Its totient is φ = 201699797760.

The previous prime is 202102001971. The next prime is 202102002007. The reversal of 202102002001 is 100200201202.

It can be written as a sum of positive squares in 4 ways, for example, as 6561162001 + 195540840000 = 81001^2 + 442200^2 .

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 202102002001 - 2¹⁵ = 202101969233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202102002007) 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, 1152505 + ... + 1316233.

It is an arithmetic number, because the mean of its divisors is an integer number (25313067325).

Almost surely, 2^202102002001 is an apocalyptic number.

It is an amenable number.

202102002001 is a deficient number, since it is larger than the sum of its proper divisors (402536599).

202102002001 is a wasteful number, since it uses less digits than its factorization.

202102002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166179.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202102002001 its reverse (100200201202), we get a palindrome (302302203203).

The spelling of 202102002001 in words is "two hundred two billion, one hundred two million, two thousand, one".