200011112123 has 2 divisors, whose sum is σ = 200011112124. Its totient is φ = 200011112122.

The previous prime is 200011112113. The next prime is 200011112137. The reversal of 200011112123 is 321211110002.

It is an a-pointer prime, because the next prime (200011112137) can be obtained adding 200011112123 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200011112123 - 2¹⁰ = 200011111099 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 200011112098 and 200011112107.

It is not a weakly prime, because it can be changed into another prime (200011112113) 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, 100005556061 + 100005556062.

It is an arithmetic number, because the mean of its divisors is an integer number (100005556062).

Almost surely, 2^200011112123 is an apocalyptic number.

200011112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

200011112123 is an equidigital number, since it uses as much as digits as its factorization.

200011112123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 200011112123 its reverse (321211110002), we get a palindrome (521222222125).

The spelling of 200011112123 in words is "two hundred billion, eleven million, one hundred twelve thousand, one hundred twenty-three".