200021001011 has 12 divisors (see below), whose sum is σ = 216824102280. Its totient is φ = 184435879680.

The previous prime is 200021001007. The next prime is 200021001073. The reversal of 200021001011 is 110100120002.

It is not a de Polignac number, because 200021001011 - 2² = 200021001007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200021001011.

It is not an unprimeable number, because it can be changed into a prime (200021001001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480005 + ... + 794006.

It is an arithmetic number, because the mean of its divisors is an integer number (18068675190).

Almost surely, 2^200021001011 is an apocalyptic number.

200021001011 is a deficient number, since it is larger than the sum of its proper divisors (16803101269).

200021001011 is a wasteful number, since it uses less digits than its factorization.

200021001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274966 (or 1274953 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 200021001011 its reverse (110100120002), we get a palindrome (310121121013).

The spelling of 200021001011 in words is "two hundred billion, twenty-one million, one thousand, eleven".