200121201200111 has 2 divisors, whose sum is σ = 200121201200112. Its totient is φ = 200121201200110.

The previous prime is 200121201200093. The next prime is 200121201200131. The reversal of 200121201200111 is 111002102121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200121201200111 - 2¹⁴ = 200121201183727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121201200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060600600055 + 100060600600056.

It is an arithmetic number, because the mean of its divisors is an integer number (100060600600056).

Almost surely, 2^{200121201200111} is an apocalyptic number.

200121201200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121201200111 is an equidigital number, since it uses as much as digits as its factorization.

200121201200111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200121201200111 its reverse (111002102121002), we get a palindrome (311123303321113).

The spelling of 200121201200111 in words is "two hundred trillion, one hundred twenty-one billion, two hundred one million, two hundred thousand, one hundred eleven".