200112220111121 has 2 divisors, whose sum is σ = 200112220111122. Its totient is φ = 200112220111120.

The previous prime is 200112220111087. The next prime is 200112220111157. The reversal of 200112220111121 is 121111022211002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194174888662225 + 5937331448896 = 13934665^2 + 2436664^2 .

It is a cyclic number.

It is not a de Polignac number, because 200112220111121 - 2³⁰ = 200111146369297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200112220111121.

It is not a weakly prime, because it can be changed into another prime (200112220113121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100056110055560 + 100056110055561.

It is an arithmetic number, because the mean of its divisors is an integer number (100056110055561).

Almost surely, 2^{200112220111121} is an apocalyptic number.

It is an amenable number.

200112220111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200112220111121 is an equidigital number, since it uses as much as digits as its factorization.

200112220111121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 200112220111121 its reverse (121111022211002), we get a palindrome (321223242322123).

The spelling of 200112220111121 in words is "two hundred trillion, one hundred twelve billion, two hundred twenty million, one hundred eleven thousand, one hundred twenty-one".