200021001010 has 16 divisors (see below), whose sum is σ = 360048957336. Its totient is φ = 80005921408.

The previous prime is 200021001007. The next prime is 200021001073. The reversal of 200021001010 is 10100120002.

It can be written as a sum of positive squares in 4 ways, for example, as 198847321929 + 1173679081 = 445923^2 + 34259^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200021000984 and 200021001002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48774 + ... + 634366.

Almost surely, 2^200021001010 is an apocalyptic number.

200021001010 is a deficient number, since it is larger than the sum of its proper divisors (160027956326).

200021001010 is a wasteful number, since it uses less digits than its factorization.

200021001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619757.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 200021001010 its reverse (10100120002), we get a palindrome (210121121012).

The spelling of 200021001010 in words is "two hundred billion, twenty-one million, one thousand, ten".