200000023021 has 4 divisors (see below), whose sum is σ = 200037957372. Its totient is φ = 199962088672.

The previous prime is 200000023007. The next prime is 200000023081. The reversal of 200000023021 is 120320000002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65027550025 + 134972472996 = 255005^2 + 367386^2 .

It is a cyclic number.

It is not a de Polignac number, because 200000023021 - 2¹³ = 200000014829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200000022989 and 200000023007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000023001) 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, 18959266 + ... + 18969811.

It is an arithmetic number, because the mean of its divisors is an integer number (50009489343).

Almost surely, 2^200000023021 is an apocalyptic number.

It is an amenable number.

200000023021 is a deficient number, since it is larger than the sum of its proper divisors (37934351).

200000023021 is an equidigital number, since it uses as much as digits as its factorization.

200000023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37934350.

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 200000023021 its reverse (120320000002), we get a palindrome (320320023023).

The spelling of 200000023021 in words is "two hundred billion, twenty-three thousand, twenty-one".