200100111123 has 16 divisors (see below), whose sum is σ = 291069574272. Its totient is φ = 121266600000.

The previous prime is 200100111109. The next prime is 200100111163. The reversal of 200100111123 is 321111001002.

It is not a de Polignac number, because 200100111123 - 2⁵ = 200100111091 is a prime.

It is a super-2 number, since 2×200100111123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200100111099 and 200100111108.

It is not an unprimeable number, because it can be changed into a prime (200100111103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548668 + ... + 837398.

It is an arithmetic number, because the mean of its divisors is an integer number (18191848392).

Almost surely, 2^200100111123 is an apocalyptic number.

200100111123 is a deficient number, since it is larger than the sum of its proper divisors (90969463149).

200100111123 is a wasteful number, since it uses less digits than its factorization.

200100111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309746.

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

Adding to 200100111123 its reverse (321111001002), we get a palindrome (521211112125).

The spelling of 200100111123 in words is "two hundred billion, one hundred million, one hundred eleven thousand, one hundred twenty-three".