200010121 has 2 divisors, whose sum is σ = 200010122. Its totient is φ = 200010120.

The previous prime is 200010119. The next prime is 200010127. The reversal of 200010121 is 121010002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157251600 + 42758521 = 12540^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 200010121 - 2¹ = 200010119 is a prime.

Together with 200010119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100005060 + 100005061.

It is an arithmetic number, because the mean of its divisors is an integer number (100005061).

Almost surely, 2^200010121 is an apocalyptic number.

It is an amenable number.

200010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200010121 is an equidigital number, since it uses as much as digits as its factorization.

200010121 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 200010121 is about 14142.4934505907. The cubic root of 200010121 is about 584.8134121374.

Adding to 200010121 its reverse (121010002), we get a palindrome (321020123).

It can be divided in two parts, 2000 and 10121, that added together give a palindrome (12121).

The spelling of 200010121 in words is "two hundred million, ten thousand, one hundred twenty-one".