200021011 has 2 divisors, whose sum is σ = 200021012. Its totient is φ = 200021010.

The previous prime is 200021009. The next prime is 200021023. The reversal of 200021011 is 110120002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200021011 - 2¹ = 200021009 is a prime.

Together with 200021009, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 200020985 and 200021003.

It is not a weakly prime, because it can be changed into another prime (200021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010505 + 100010506.

It is an arithmetic number, because the mean of its divisors is an integer number (100010506).

Almost surely, 2^200021011 is an apocalyptic number.

200021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021011 is an equidigital number, since it uses as much as digits as its factorization.

200021011 is an odious number, because the sum of its binary digits is odd.

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

The square root of 200021011 is about 14142.8784552509. The cubic root of 200021011 is about 584.8240257710.

Adding to 200021011 its reverse (110120002), we get a palindrome (310141013).

The spelling of 200021011 in words is "two hundred million, twenty-one thousand, eleven".