200201005000021 has 2 divisors, whose sum is σ = 200201005000022. Its totient is φ = 200201005000020.

The previous prime is 200201004999883. The next prime is 200201005000027. The reversal of 200201005000021 is 120000500102002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121465747322500 + 78735257677521 = 11021150^2 + 8873289^2 .

It is a cyclic number.

It is not a de Polignac number, because 200201005000021 - 2³¹ = 200198857516373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200201004999965 and 200201005000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200201005000027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100100502500010 + 100100502500011.

It is an arithmetic number, because the mean of its divisors is an integer number (100100502500011).

Almost surely, 2^{200201005000021} is an apocalyptic number.

It is an amenable number.

200201005000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200201005000021 is an equidigital number, since it uses as much as digits as its factorization.

200201005000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 13.

Adding to 200201005000021 its reverse (120000500102002), we get a palindrome (320201505102023).

The spelling of 200201005000021 in words is "two hundred trillion, two hundred one billion, five million, twenty-one", and thus it is an aban number.