200200211021 has 4 divisors (see below), whose sum is σ = 200202974844. Its totient is φ = 200197447200.

The previous prime is 200200210943. The next prime is 200200211039. The reversal of 200200211021 is 120112002002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120112002002 = 2 ⋅60056001001.

It can be written as a sum of positive squares in 2 ways, for example, as 42595180996 + 157605030025 = 206386^2 + 396995^2 .

It is a cyclic number.

It is not a de Polignac number, because 200200211021 - 2¹⁴ = 200200194637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200200210993 and 200200211011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200200211041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270250 + ... + 1419131.

It is an arithmetic number, because the mean of its divisors is an integer number (50050743711).

Almost surely, 2^200200211021 is an apocalyptic number.

It is an amenable number.

200200211021 is a deficient number, since it is larger than the sum of its proper divisors (2763823).

200200211021 is an equidigital number, since it uses as much as digits as its factorization.

200200211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763822.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200200211021 its reverse (120112002002), we get a palindrome (320312213023).

The spelling of 200200211021 in words is "two hundred billion, two hundred million, two hundred eleven thousand, twenty-one".