200030021 has 8 divisors (see below), whose sum is σ = 205094400. Its totient is φ = 194974560.

The previous prime is 200030009. The next prime is 200030027. The reversal of 200030021 is 120030002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200030021 - 2¹⁴ = 200013637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200029990 and 200030008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200030027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88220 + ... + 90458.

It is an arithmetic number, because the mean of its divisors is an integer number (25636800).

Almost surely, 2^200030021 is an apocalyptic number.

It is an amenable number.

200030021 is a deficient number, since it is larger than the sum of its proper divisors (5064379).

200030021 is a wasteful number, since it uses less digits than its factorization.

200030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 200030021 is about 14143.1969865374. The cubic root of 200030021 is about 584.8328068241.

Adding to 200030021 its reverse (120030002), we get a palindrome (320060023).

The spelling of 200030021 in words is "two hundred million, thirty thousand, twenty-one".