200003201021 has 16 divisors (see below), whose sum is σ = 219275901936. Its totient is φ = 181307621376.

The previous prime is 200003201011. The next prime is 200003201071. The reversal of 200003201021 is 120102300002.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 85431105796 + 114572095225 = 292286^2 + 338485^2 .

It is a cyclic number.

It is not a de Polignac number, because 200003201021 - 2¹⁴ = 200003184637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200003200993 and 200003201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200003201011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231140 + ... + 673373.

It is an arithmetic number, because the mean of its divisors is an integer number (13704743871).

Almost surely, 2^200003201021 is an apocalyptic number.

It is an amenable number.

200003201021 is a deficient number, since it is larger than the sum of its proper divisors (19272700915).

200003201021 is a wasteful number, since it uses less digits than its factorization.

200003201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904832.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 200003201021 its reverse (120102300002), we get a palindrome (320105501023).

The spelling of 200003201021 in words is "two hundred billion, three million, two hundred one thousand, twenty-one".