200111100000123 has 32 divisors (see below), whose sum is σ = 300146636450304. Its totient is φ = 117667548294912.

The previous prime is 200111100000083. The next prime is 200111100000173. The reversal of 200111100000123 is 321000001111002.

It is not a de Polignac number, because 200111100000123 - 2¹⁶ = 200111099934587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200111100000099 and 200111100000108.

It is not an unprimeable number, because it can be changed into a prime (200111100000173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116190961 + ... + 117900642.

It is an arithmetic number, because the mean of its divisors is an integer number (9379582389072).

Almost surely, 2^{200111100000123} is an apocalyptic number.

200111100000123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

200111100000123 is a deficient number, since it is larger than the sum of its proper divisors (100035536450181).

200111100000123 is a wasteful number, since it uses less digits than its factorization.

200111100000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234092595.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 200111100000123 its reverse (321000001111002), we get a palindrome (521111101111125).

The spelling of 200111100000123 in words is "two hundred trillion, one hundred eleven billion, one hundred million, one hundred twenty-three", and thus it is an aban number.