200111011123 has 4 divisors (see below), whose sum is σ = 200132234488. Its totient is φ = 200089787760.

The previous prime is 200111011109. The next prime is 200111011141. The reversal of 200111011123 is 321110111002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200111011123 - 2⁵ = 200111011091 is a prime.

It is a super-2 number, since 2×200111011123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200111014123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10597533 + ... + 10616398.

It is an arithmetic number, because the mean of its divisors is an integer number (50033058622).

Almost surely, 2^200111011123 is an apocalyptic number.

200111011123 is a deficient number, since it is larger than the sum of its proper divisors (21223365).

200111011123 is an equidigital number, since it uses as much as digits as its factorization.

200111011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223364.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 200111011123 its reverse (321110111002), we get a palindrome (521221122125).

The spelling of 200111011123 in words is "two hundred billion, one hundred eleven million, eleven thousand, one hundred twenty-three".