200111202110123 has 2 divisors, whose sum is σ = 200111202110124. Its totient is φ = 200111202110122.

The previous prime is 200111202110101. The next prime is 200111202110143. The reversal of 200111202110123 is 321011202111002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200111202110123 - 2¹⁶ = 200111202044587 is a prime.

It is not a weakly prime, because it can be changed into another prime (200111202110143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055601055061 + 100055601055062.

It is an arithmetic number, because the mean of its divisors is an integer number (100055601055062).

Almost surely, 2^{200111202110123} is an apocalyptic number.

200111202110123 is a deficient number, since it is larger than the sum of its proper divisors (1).

200111202110123 is an equidigital number, since it uses as much as digits as its factorization.

200111202110123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 200111202110123 its reverse (321011202111002), we get a palindrome (521122404221125).

The spelling of 200111202110123 in words is "two hundred trillion, one hundred eleven billion, two hundred two million, one hundred ten thousand, one hundred twenty-three".