200020012001 has 8 divisors (see below), whose sum is σ = 200901883560. Its totient is φ = 199139496192.

The previous prime is 200020011979. The next prime is 200020012019. The reversal of 200020012001 is 100210020002.

It can be written as a sum of positive squares in 4 ways, for example, as 69670130401 + 130349881600 = 263951^2 + 361040^2 .

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 200020012001 - 2²² = 200015817697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200020012001.

It is not an unprimeable number, because it can be changed into a prime (200020012021) 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, 42650 + ... + 633923.

It is an arithmetic number, because the mean of its divisors is an integer number (25112735445).

Almost surely, 2^200020012001 is an apocalyptic number.

It is an amenable number.

200020012001 is a deficient number, since it is larger than the sum of its proper divisors (881871559).

200020012001 is a wasteful number, since it uses less digits than its factorization.

200020012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677875.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 200020012001 its reverse (100210020002), we get a palindrome (300230032003).

The spelling of 200020012001 in words is "two hundred billion, twenty million, twelve thousand, one".