200120011111 has 2 divisors, whose sum is σ = 200120011112. Its totient is φ = 200120011110.

The previous prime is 200120011061. The next prime is 200120011177. The reversal of 200120011111 is 111110021002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200120011111 - 2¹⁵ = 200119978343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200120012111) 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, 100060005555 + 100060005556.

It is an arithmetic number, because the mean of its divisors is an integer number (100060005556).

Almost surely, 2^200120011111 is an apocalyptic number.

200120011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120011111 is an equidigital number, since it uses as much as digits as its factorization.

200120011111 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 10.

Adding to 200120011111 its reverse (111110021002), we get a palindrome (311230032113).

The spelling of 200120011111 in words is "two hundred billion, one hundred twenty million, eleven thousand, one hundred eleven".