200120111117 has 2 divisors, whose sum is σ = 200120111118. Its totient is φ = 200120111116.

The previous prime is 200120111057. The next prime is 200120111129. The reversal of 200120111117 is 711111021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122654748841 + 77465362276 = 350221^2 + 278326^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120111117 - 2¹⁰ = 200120110093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200120111095 and 200120111104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200120111137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060055558 + 100060055559.

It is an arithmetic number, because the mean of its divisors is an integer number (100060055559).

Almost surely, 2^200120111117 is an apocalyptic number.

It is an amenable number.

200120111117 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120111117 is an equidigital number, since it uses as much as digits as its factorization.

200120111117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 200120111117 its reverse (711111021002), we get a palindrome (911231132119).

The spelling of 200120111117 in words is "two hundred billion, one hundred twenty million, one hundred eleven thousand, one hundred seventeen".