200021020001 has 72 divisors (see below), whose sum is σ = 248593266432. Its totient is φ = 160176121600.

The previous prime is 200021019973. The next prime is 200021020007. The reversal of 200021020001 is 100020120002.

It is not a de Polignac number, because 200021020001 - 2¹⁸ = 200020757857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200021020007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51141236 + ... + 51145146.

It is an arithmetic number, because the mean of its divisors is an integer number (3452684256).

Almost surely, 2^200021020001 is an apocalyptic number.

It is an amenable number.

200021020001 is a deficient number, since it is larger than the sum of its proper divisors (48572246431).

200021020001 is a wasteful number, since it uses less digits than its factorization.

200021020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4009 counting only the distinct ones).

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

Adding to 200021020001 its reverse (100020120002), we get a palindrome (300041140003).

The spelling of 200021020001 in words is "two hundred billion, twenty-one million, twenty thousand, one".